Topic 9 · How to take a mixture apart — the question types, for your rulings
A type sheet shows ONE exemplar question for each question type in this topic's test bank. The bank of about fifty items follows these shapes, so approving a type approves every item written to it.
16 cards. Tap a button on each; Approve posts at once, the other two open a line for you, and the ruling goes to the build.
Topic 9 · How to take a mixture apart · Type 1 · bank item PP-1 · tests MAT5-020
EasyMCQType 1 — which property the part kept, given the tool that got it back
Steel thumbtacks are mixed into a jar of corn kernels, and a magnet lifts the tacks out. Which property did the tacks keep? — (a) heavy (b) magnetic (c) sharp (d) yellow.
Why it is this type: Each part of a mixture keeps its own properties. Steel is magnetic, and the tacks are still steel. So the tacks kept the property magnetic, and the magnet lifted them out.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 2 · bank item PP-2 · tests MAT5-020
EasyMCQType 2 — which sentence is true of a mixed part; what happened to each grain; what mixing does to each part
Grapes are mixed into a bowl of blueberries. Which sentence about the grapes is true? — (a) The grapes have turned into blueberries. (b) The grapes have lost their color. (c) Each grape is still a grape. (d) The grapes can never be picked out.
Why it is this type: In a mixture, each material is still itself. The grapes are mixed with blueberries, but each grape is still a grape. So each grape keeps its properties and can be picked out.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 3 · bank item PP-8 · tests MAT5-021
EasyMCQType 3 — what the solid did
A spoon of instant coffee stirred into cold milk vanishes. What did the coffee do? — (a) It melted. (b) It dissolved. (c) It evaporated. (d) It froze.
Why it is this type: A solid that spreads through a liquid in pieces too small to see has dissolved. Nothing warmed the coffee; it spread through the cold milk. So the coffee dissolved.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 4 · bank item PP-13 · tests MAT5-025
EasyMCQType 4 — which action makes it dissolve faster / slower; in which water; which of two forms
A cook puts one spoon of salt into cold water and another into hot water, and leaves both still. In which water does the salt dissolve faster? — (a) in the cold water (b) in the hot water (c) in both at the same speed (d) in neither.
Why it is this type: Warmer water speeds up dissolving. The hot water is warmer than the cold water. So the salt dissolves faster in the hot water.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 5 · bank item PP-17 · tests MAT5-022
EasyMCQType 5 — which difference you can see separates two same-size solids
Green beads and yellow beads of the same size are mixed. Which difference you can see lets you separate them? — (a) their size (b) their color (c) their mass (d) their smell.
Why it is this type: To separate solids, find a difference you can see between the parts. The beads are the same size but different colors. So color is the difference you can see.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 6 · bank item PP-19 · tests MAT5-023
EasyMCQType 6 — which of four things a magnet pulls out
Which of these does a magnet pull out of a mixture? — (a) gold rings (b) rubber bands (c) iron nails (d) an aluminum pie pan.
Why it is this type: Steel, iron, nickel and cobalt are magnetic: a magnet pulls them. Gold, rubber and aluminum are not magnetic. So a magnet pulls out the iron nails.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 7 · bank item PP-30 · tests MAT5-022
MediumMCQType 7 — the correct reason (the hinges came back; the sugar dissolved rather than melted; the crushed tablet vanished first; a filter keeps sand)
Which sentence gives the correct reason a filter keeps sand but lets water through? — (a) It pulls the sand like a magnet does. (b) Its holes are too small for the sand. (c) The water is heavier than the sand. (d) The sand dissolves into the paper.
Why it is this type: A filter is a sieve with holes too small to see. Every sand grain is a piece you can see, so it is too big for the holes, and the water is not. So the sand stays on the filter and the water goes through.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 8 · bank item PP-36 · tests MAT5-024
MediumMCQType 8 — which method separates / gets X out / takes X out first / now separates the rest
Soil is stirred into a jar of water, and you can see the soil. Which method gets the soil out of the water? — (a) a sieve (b) a magnet (c) a filter (d) let the water evaporate.
Why it is this type: To choose a separating method, name the property that is different between the parts. You can see the soil pieces in the water, so a filter keeps them and lets the water through. So a filter gets the soil out.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 9 · bank item PP-48 · tests MAT5-024
HardMCQType 9 — a named child is wrong: what is the correct reason
Josie is wrong to say that a filter will take dissolved sugar out of sweet tea. What is the correct reason? — (a) The dissolved sugar goes through with the tea. (b) Sugar is magnetic, so only a magnet works. (c) Tea is too hot for a filter paper to work. (d) The sugar is bigger than the filter's holes.
Why it is this type: A dissolved solid passes through a filter. The sugar is dissolved, in pieces far smaller than the filter's holes, so it goes through with the tea; letting the water evaporate gets it back. So Josie is not right. Hard because: the belief (register SD-2) is judged by its correct reason. Source: register MAT5 SD-2; Lesson 6 (Choose the separating method)'s lines "The salt water runs straight through, and nothing is left on the paper." / "So a filter cannot take dissolved salt out of water."
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 10 · bank item PP-24 · tests MAT5-021
MediumMCQType 10 — which case shows melting; what extra thing dissolving needs
Melting needs one material. Which extra thing does dissolving need? — (a) a warm place to sit in (b) a liquid to spread into (c) a hard surface to rest on (d) a cold day to start on.
Why it is this type: Melting needs one material and some warmth. Dissolving needs two materials: a solid and a liquid for its tiny pieces to spread into. So dissolving needs a liquid for the solid to spread into.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 11 · bank item PP-32 · tests MAT5-023
MediumMCQType 11 — what happens when a magnet is held over the mixture
A magnet is held over a mixture of aluminum pull tabs and rubber bands. What happens? — (a) The pull tabs jump to the magnet. (b) The rubber bands jump to the magnet. (c) Both the tabs and the bands jump to the magnet. (d) Nothing moves.
Why it is this type: A magnet pulls only the magnetic part of a mixture. Aluminum is a metal, but it is not magnetic, and rubber is not magnetic. So nothing moves.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 12 · bank item PP-33 · tests MAT5-023
MediumMCQType 12 — which pair a magnet can separate
Which pair can a magnet separate? — (a) steel springs and dry oats (b) copper wire and gold rings (c) sugar and salt (d) aluminum pie pans and paper plates.
Why it is this type: A magnet pulls the magnetic part out of a mixture. Steel is magnetic and oats are not; in the other pairs neither part is magnetic. So a magnet can separate steel springs and dry oats.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 13 · bank item PP-43 · tests MAT5-022
HardtypedType 13 — the word for the change; the name of the pan; the name of the paper; the name of the tool; the property
A boy pours muddy water through a cone of paper with holes too small to see. Clear water drips out, and the mud stays on the paper. Type the name of the paper.
Accepted answers (typed): filter, a filter, the filter, filters, filter paper, a filter paper, the filter paper, paper filter, a paper filter, coffee filter, a coffee filter, filtur, fillter, filer. Wrong-answer lines for "sieve", "paper", "funnel".
Why it is this type: Paper with holes too small to see, folded into a cone, is called a filter. So the paper is a filter. Hard because: the paper's name is produced from a fresh scene.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 14 · bank item PP-40 · tests MAT5-025
HardMCQType 14 — the THREE actions that speed up dissolving
Select the THREE actions that speed up dissolving. — stirring, using warmer water, using smaller pieces, leaving the water still.
Why it is this type: Stirring, warmer water and smaller pieces speed up dissolving. Leaving the water still slows dissolving down. So the three actions are stirring, warmer water and smaller pieces. Hard because: the answer is a set.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 15 · bank item PP-47 · tests MAT5-023
HardMCQType 15 — two ideas weighed at once: the slowest of four cups; which two parts stay in the drawer
A drawer holds steel spoons, copper spoons and wooden spoons. A magnet is held over the drawer. Which spoons stay in the drawer? — (a) the steel spoons and the wooden spoons (b) the steel spoons and the copper spoons (c) none: every spoon leaves the drawer (d) the copper spoons and the wooden spoons.
Why it is this type: A magnet pulls the magnetic part out of a mixture and leaves the rest behind. Steel is magnetic; copper is a metal that is not magnetic, and wood is not magnetic. So the copper spoons and the wooden spoons stay in the drawer. Hard because: two non-magnetic parts, one of them a metal, must both be left behind.
Recommendation: Approve as the exemplar
Topic 9 · How to take a mixture apart · Type 16 · bank item PP-51 · tests MAT5-024
HardMCQType 16 — what a filter leaves behind from sand and sugar water
A boy pours a mixture of sand and sugar water through a filter. What is left on the paper? — (a) the sugar only (b) the sand only (c) the sand and the sugar (d) nothing.
Why it is this type: A filter keeps any piece you can see, and a dissolved solid passes through it. The sand pieces can be seen, so they stay; the sugar is dissolved, so it goes through with the water. So only the sand is left on the paper. Hard because: two ideas chained — a visible solid is caught, a dissolved solid passes.
Recommendation: Approve as the exemplar
The full sheet, as written (coverage table, reading notes, every section)
Skill: course-build → write-mcqs → write-explanation, design-check-sequence @ cca3af6
Topic 9 — How to take a mixture apart — the PP100's question types, with their exemplars
What this page is. James reads a bank as its question TYPES first (vault: A bank is reviewed as its question types first, one exemplar each). Under the Grade 5 standing brief the bank is built straight away (54 items in content/G5T09_pp100_bank.py); this sheet is the way in. Each type line says what the stem asks, what the four options (or the accept list) are, and prints one exemplar in full.
Rulings already applied. Four options on every MCQ (fixed sets: the four methods "a sieve / a magnet / a filter / let the water evaporate", whose key moves; the four sister words for a vanished solid "It melted. / It dissolved. / It evaporated. / It froze.", whose key moves; both in KEY_TELL_EXEMPT_SETS); no option bundles a verdict with its reason — every bank claim is "X is wrong … What is the correct reason?" with four single-statement reasons; the hard tier is mostly typed (7 typed: sieve ×2, filter ×2, magnet, melted, magnetic) with one multi-select whose answer is a set; every item is tagged to ONE atom; difficulty rises with the atom's position (MAT5-020 six easy, two medium; 024 four medium, seven hard); every item a fresh instance (the inventory below); KEY TELLS: 0 of 132; MCQ keys A 13 · B 14 · C 11 · D 8.
The bar list (real things a generated item must never use): the lesson scenes (iron filings in sand; peas and rice; red and white beads; sugar in cold water; sugar in a hot pan; an ice cube on a plate; a sugar cube in a glass; pebbles and beach sand; sand in a jar of water; steel and aluminum cans; paper clips and plastic beads; beans and rice; salt water in a dish); any melting or boiling point other than water's; "brass" (not in Grade 3's magnetic / not-magnetic lists); "dissolve" for a liquid in a liquid (the register's atom is a solid); "gravity"; any taste as evidence.
The sixteen types (the four tools each need a which-method form, the two sorts their case forms, and the capstone its reason, set and two-step forms)
| Type | Items | Atom | Tags | Form | The stem asks… | The options / the accept | Exemplar scene |
|---|---|---|---|---|---|---|---|
| 1 | 3 | 020 | easy | MCQ | which property the part kept, given the tool that got it back | magnetic / heavy / sharp / yellow; bigger / magnetic / sweet / yellow; their color / size / mass / shape | thumbtacks in corn kernels; lentils and chickpeas; orange and white golf balls |
| 2 | 3 | 020 | easy | MCQ | which sentence is true of a mixed part; what happened to each grain; what mixing does to each part | four sentences, one true | grapes in blueberries; sand in garden soil; the general fact |
| 3 | 5 | 021 | easy | MCQ, the sister-word set | what the solid did | It melted. / It dissolved. / It evaporated. / It froze. | lip balm in a hot car; instant coffee in cold milk; an icicle; powdered sugar in warm milk; cheese on pizza |
| 4 | 6 | 025 | easy, medium | MCQ | which action makes it dissolve faster / slower; in which water; which of two forms | four actions or four cases | salt in soup; hot and cold water; lemonade powder and tablet; the slowing action; salt in ice-cold water; the slowest choice |
| 5 | 2 | 022 | easy, hard | MCQ | which difference you can see separates two same-size solids | their color / size / mass / smell | green and yellow beads; black sesame seeds in white rice (hard: size ruled out first) |
| 6 | 1 | 023 | easy | MCQ | which of four things a magnet pulls out | iron nails / gold rings / rubber bands / an aluminum pie pan | the four things |
| 7 | 5 | 020, 021, 025, 022 | medium | MCQ | the correct reason (the hinges came back; the sugar dissolved rather than melted; the crushed tablet vanished first; a filter keeps sand) | four single statements | hinges in sawdust; iced lemonade; two tablets; the filter |
| 8 | 11 | 022, 023, 024 | easy, medium, hard | MCQ, the method set | which method separates / gets X out / takes X out first / now separates the rest | a sieve / a magnet / a filter / let the water evaporate | pecans and peanuts; sawdust in water; dried cranberries in sugar; steel nuts and game pieces; cereal and sugar; nails and shavings; soil in water; powdered milk; bolts, chickpeas and sand (two steps); sugar water after filtering |
| 9 | 3 | 020, 021, 024 | medium, hard | MCQ, claim by reason | a named child is wrong: what is the correct reason | four single-statement reasons | Ivan (gravel and sand never apart); Jonah (the sugar in cold tea melted); Josie (a filter takes dissolved sugar out) |
| 10 | 2 | 021 | medium | MCQ | which case shows melting; what extra thing dissolving needs | four cases; four things | coconut oil in a warm pan; "a liquid to spread into" |
| 11 | 2 | 023 | medium | MCQ | what happens when a magnet is held over the mixture | four outcomes | staples and rice; pull tabs and rubber bands (nothing moves) |
| 12 | 1 | 023 | medium | MCQ | which pair a magnet can separate | four pairs | steel springs and oats |
| 13 | 7 | 021, 022, 023, 024 | hard | typed | the word for the change; the name of the pan; the name of the paper; the name of the tool; the property | melted / sieve / filter / magnet / magnetic, each with article, plural, synonym and child-spelling forms | a popsicle; flour and its lumps; eggshell bits in water; sewing needles in beans; steel and plastic rings; beans and sawdust; crushed leaves in water |
| 14 | 1 | 025 | hard | multi-select | the THREE actions that speed up dissolving | stirring / warmer water / smaller pieces / leaving the water still | the set |
| 15 | 2 | 025, 023 | hard | MCQ | two ideas weighed at once: the slowest of four cups; which two parts stay in the drawer | four combinations; four sets | a mint candy in four cups; steel, copper and wooden spoons |
| 16 | 1 | 024 | hard | MCQ | what a filter leaves behind from sand and sugar water | the sand only / the sugar only / both / nothing | a boy with a filter |
The exemplars, one per type
Type 1 (easy, MAT5-020) PP-1. Steel thumbtacks are mixed into a jar of corn kernels, and a magnet lifts the tacks out. Which property did the tacks keep? — (a) heavy (b) magnetic (c) sharp (d) yellow. Why: Each part of a mixture keeps its own properties. Steel is magnetic, and the tacks are still steel. So the tacks kept the property magnetic, and the magnet lifted them out.
Type 2 (easy, MAT5-020) PP-2. Grapes are mixed into a bowl of blueberries. Which sentence about the grapes is true? — (a) The grapes have turned into blueberries. (b) The grapes have lost their color. (c) Each grape is still a grape. (d) The grapes can never be picked out. Why: In a mixture, each material is still itself. The grapes are mixed with blueberries, but each grape is still a grape. So each grape keeps its properties and can be picked out.
Type 3 (easy, MAT5-021) PP-8. A spoon of instant coffee stirred into cold milk vanishes. What did the coffee do? — (a) It melted. (b) It dissolved. (c) It evaporated. (d) It froze. Why: A solid that spreads through a liquid in pieces too small to see has dissolved. Nothing warmed the coffee; it spread through the cold milk. So the coffee dissolved.
Type 4 (easy, MAT5-025) PP-13. A cook puts one spoon of salt into cold water and another into hot water, and leaves both still. In which water does the salt dissolve faster? — (a) in the cold water (b) in the hot water (c) in both at the same speed (d) in neither. Why: Warmer water speeds up dissolving. The hot water is warmer than the cold water. So the salt dissolves faster in the hot water.
Type 5 (easy, MAT5-022) PP-17. Green beads and yellow beads of the same size are mixed. Which difference you can see lets you separate them? — (a) their size (b) their color (c) their mass (d) their smell. Why: To separate solids, find a difference you can see between the parts. The beads are the same size but different colors. So color is the difference you can see.
Type 6 (easy, MAT5-023) PP-19. Which of these does a magnet pull out of a mixture? — (a) gold rings (b) rubber bands (c) iron nails (d) an aluminum pie pan. Why: Steel, iron, nickel and cobalt are magnetic: a magnet pulls them. Gold, rubber and aluminum are not magnetic. So a magnet pulls out the iron nails.
Type 7 (medium, MAT5-022) PP-30. Which sentence gives the correct reason a filter keeps sand but lets water through? — (a) It pulls the sand like a magnet does. (b) Its holes are too small for the sand. (c) The water is heavier than the sand. (d) The sand dissolves into the paper. Why: A filter is a sieve with holes too small to see. Every sand grain is a piece you can see, so it is too big for the holes, and the water is not. So the sand stays on the filter and the water goes through.
Type 8 (medium, MAT5-024) PP-36. Soil is stirred into a jar of water, and you can see the soil. Which method gets the soil out of the water? — (a) a sieve (b) a magnet (c) a filter (d) let the water evaporate. Why: To choose a separating method, name the property that is different between the parts. You can see the soil pieces in the water, so a filter keeps them and lets the water through. So a filter gets the soil out.
Type 9 (hard, MAT5-024) PP-48. Josie is wrong to say that a filter will take dissolved sugar out of sweet tea. What is the correct reason? — (a) The dissolved sugar goes through with the tea. (b) Sugar is magnetic, so only a magnet works. (c) Tea is too hot for a filter paper to work. (d) The sugar is bigger than the filter's holes. Why: A dissolved solid passes through a filter. The sugar is dissolved, in pieces far smaller than the filter's holes, so it goes through with the tea; letting the water evaporate gets it back. So Josie is not right. Hard because: the belief (register SD-2) is judged by its correct reason. Source: register MAT5 SD-2; Lesson 6 (Choose the separating method)'s lines "The salt water runs straight through, and nothing is left on the paper." / "So a filter cannot take dissolved salt out of water."
Type 10 (medium, MAT5-021) PP-24. Melting needs one material. Which extra thing does dissolving need? — (a) a warm place to sit in (b) a liquid to spread into (c) a hard surface to rest on (d) a cold day to start on. Why: Melting needs one material and some warmth. Dissolving needs two materials: a solid and a liquid for its tiny pieces to spread into. So dissolving needs a liquid for the solid to spread into.
Type 11 (medium, MAT5-023) PP-32. A magnet is held over a mixture of aluminum pull tabs and rubber bands. What happens? — (a) The pull tabs jump to the magnet. (b) The rubber bands jump to the magnet. (c) Both the tabs and the bands jump to the magnet. (d) Nothing moves. Why: A magnet pulls only the magnetic part of a mixture. Aluminum is a metal, but it is not magnetic, and rubber is not magnetic. So nothing moves.
Type 12 (medium, MAT5-023) PP-33. Which pair can a magnet separate? — (a) steel springs and dry oats (b) copper wire and gold rings (c) sugar and salt (d) aluminum pie pans and paper plates. Why: A magnet pulls the magnetic part out of a mixture. Steel is magnetic and oats are not; in the other pairs neither part is magnetic. So a magnet can separate steel springs and dry oats.
Type 13 (hard, MAT5-022) PP-43. A boy pours muddy water through a cone of paper with holes too small to see. Clear water drips out, and the mud stays on the paper. Type the name of the paper. — accept: filter, a filter, the filter, filters, filter paper, a filter paper, the filter paper, paper filter, a paper filter, coffee filter, a coffee filter, filtur, fillter, filer. Wrong-answer lines for "sieve", "paper", "funnel". Why: Paper with holes too small to see, folded into a cone, is called a filter. So the paper is a filter. Hard because: the paper's name is produced from a fresh scene.
Type 14 (hard, MAT5-025) PP-40. Select the THREE actions that speed up dissolving. — stirring, using warmer water, using smaller pieces, leaving the water still. Why: Stirring, warmer water and smaller pieces speed up dissolving. Leaving the water still slows dissolving down. So the three actions are stirring, warmer water and smaller pieces. Hard because: the answer is a set.
Type 15 (hard, MAT5-023) PP-47. A drawer holds steel spoons, copper spoons and wooden spoons. A magnet is held over the drawer. Which spoons stay in the drawer? — (a) the steel spoons and the wooden spoons (b) the steel spoons and the copper spoons (c) none: every spoon leaves the drawer (d) the copper spoons and the wooden spoons. Why: A magnet pulls the magnetic part out of a mixture and leaves the rest behind. Steel is magnetic; copper is a metal that is not magnetic, and wood is not magnetic. So the copper spoons and the wooden spoons stay in the drawer. Hard because: two non-magnetic parts, one of them a metal, must both be left behind.
Type 16 (hard, MAT5-024) PP-51. A boy pours a mixture of sand and sugar water through a filter. What is left on the paper? — (a) the sugar only (b) the sand only (c) the sand and the sugar (d) nothing. Why: A filter keeps any piece you can see, and a dissolved solid passes through it. The sand pieces can be seen, so they stay; the sugar is dissolved, so it goes through with the water. So only the sand is left on the paper. Hard because: two ideas chained — a visible solid is caught, a dissolved solid passes.
Design-move inventory (move · scene kind · nearest lesson-side instance)
| # | d | atom | move | scene kind | nearest earlier item |
|---|---|---|---|---|---|
| PP-1 | easy | 020 | name the property a magnet used | small steel things in dry food | Lesson 1 (Why you can get the parts of a mixture back) q2 (bolts in blocks) — different objects, same move family |
| PP-2 | easy | 020 | pick the true sentence about a mixed part | fruit in fruit | Lesson 1 (Why you can get the parts of a mixture back) q1 (shells in sand, yes/no) |
| PP-3 | easy | 020 | name the property a pan with holes used | two dry pulses | Lesson 1 (Why you can get the parts of a mixture back) q3 (marbles in sand) |
| PP-4 | easy | 020 | name the property hands used | two colours of one thing | Lesson 1 (Why you can get the parts of a mixture back) q4 (buttons) |
| PP-5 | easy | 020 | what happened to each grain | sand into soil | Lesson 1 (Why you can get the parts of a mixture back) q1 |
| PP-6 | easy | 020 | the general fact | — | Lesson 1 (Why you can get the parts of a mixture back)'s rule |
| PP-7–11 | easy | 021 | sort melted / dissolved, four sisters | lip balm; coffee in milk; icicle; bath salts; pizza cheese | Lesson 2 (Melted or dissolved?) q1–q7 (other solids) |
| PP-12–15 | easy | 025 | pick the faster / slower action or case | soup; hot vs cold water; powder vs tablet; the slowing action | Lesson 3 (What speeds up dissolving) q1–q6 |
| PP-16 | easy | 022 | which method for a size difference | two nuts | Lesson 4 (Separate solids by a difference you can see) q6 (acorns in soil) |
| PP-17 | easy | 022 | which visible difference | same-size beads | Lesson 4 (Separate solids by a difference you can see) q2 (marbles) |
| PP-18 | easy | 023 | which method pulls the nuts out | steel nuts in game pieces | Lesson 5 (Separate with a magnet) vq (screws in pegs) |
| PP-19 | easy | 023 | which of four a magnet pulls | four things | RECALL_BANK[4] |
| PP-20 | medium | 020 | the reason the magnet works | hinges in sawdust | Lesson 1 (Why you can get the parts of a mixture back) q6 (washers in beads) |
| PP-21 | medium | 020 | claim by reason (Ivan) | gravel and sand | Lesson 1 (Why you can get the parts of a mixture back) q5 (Jonah, popcorn) |
| PP-22 | medium | 021 | reason it dissolved not melted | iced lemonade | Lesson 2 (Melted or dissolved?) q9 |
| PP-23 | medium | 021 | which case shows melting | four cases | Lesson 2 (Melted or dissolved?)'s run |
| PP-24 | medium | 021 | what dissolving needs | — | Lesson 2 (Melted or dissolved?) q10 |
| PP-25 | medium | 025 | which change speeds it further | salt in ice-cold water | Lesson 3 (What speeds up dissolving) q1 |
| PP-26 | medium | 025 | reason the crushed tablet won | two tablets | Lesson 3 (What speeds up dissolving) q9 (salt grains vs lump) |
| PP-27 | medium | 025 | the slowest choice | a cook | Lesson 3 (What speeds up dissolving) q8 (cough drop) |
| PP-28 | medium | 022 | method for a visible solid in water | sawdust in water | Lesson 4 (Separate solids by a difference you can see) q7 (coffee grounds) |
| PP-29 | medium | 022 | method for a size difference | stones in soil | Lesson 4 (Separate solids by a difference you can see) q6 |
| PP-30 | medium | 022 | reason a filter keeps sand | — | Lesson 4 (Separate solids by a difference you can see)'s rule |
| PP-31 | medium | 023 | what happens under the magnet | staples and rice | Lesson 5 (Separate with a magnet) q6 |
| PP-32 | medium | 023 | what happens: nothing | pull tabs and rubber bands | Lesson 5 (Separate with a magnet) q8 (copper wire and buttons) |
| PP-33 | medium | 023 | which pair a magnet separates | four pairs | Lesson 5 (Separate with a magnet) q7 |
| PP-34–37 | medium | 024 | which method (sieve, magnet, filter, evaporate) | cereal and sugar; nails and shavings; soil in water; powdered milk | Lesson 6 (Choose the separating method) q3–q8 |
| PP-38 | hard | 021 | type the word for the change | popsicle | Lesson 2 (Melted or dissolved?)'s sort |
| PP-39 | hard | 021 | claim by reason (Jonah) | cold tea | Lesson 2 (Melted or dissolved?)'s headache (Jonah's claim is the lesson's point; here the reason is produced) |
| PP-40 | hard | 025 | the set of speeding actions | — | Lesson 3 (What speeds up dissolving)'s table |
| PP-41 | hard | 025 | slowest of four cups | mint candy | Lesson 3 (What speeds up dissolving) q7 (three glasses) |
| PP-42 | hard | 022 | type sieve | rice and its water | Lesson 4 (Separate solids by a difference you can see) q10 (pasta) ⟂ PP-53 (one draw per test) |
| PP-43 | hard | 022 | type filter | muddy water | PR-14 (pond water) ⟂ PP-54 |
| PP-44 | hard | 022 | which visible difference when size fails | sesame seeds in rice | Lesson 4 (Separate solids by a difference you can see) q2 |
| PP-45 | hard | 023 | type magnet | needles in beans | Lesson 5 (Separate with a magnet)'s rule |
| PP-46 | hard | 023 | type the property | steel and plastic rings | Lesson 5 (Separate with a magnet) q1–q3 |
| PP-47 | hard | 023 | which two parts stay | three kinds of spoon | Lesson 5 (Separate with a magnet) q9 (toy cars) |
| PP-48 | hard | 024 | claim by reason (Josie) | sweet tea | Lesson 6 (Choose the separating method) q9 (Jonah, bare yes/no) |
| PP-49 / PP-50 | hard | 024 | two-step: first the magnet, then the sieve | bolts, chickpeas and sand (one scene, two steps; draw both freely — different answers) | Lesson 6 (Choose the separating method) q10 |
| PP-51 | hard | 024 | what the filter leaves from sand and sugar water | a boy with a filter | Lesson 6 (Choose the separating method)'s salt-water case |
| PP-52 | hard | 024 | the method after filtering | sugar water in the cup | Lesson 6 (Choose the separating method) q6 |
| PP-53 | hard | 024 | type sieve after naming size | beans and sawdust | ⟂ PP-42 |
| PP-54 | hard | 024 | type filter after judging visibility | crushed leaves in water | ⟂ PP-43 |
⟂ draw constraints: PP-42 ⟂ PP-53 (both type "sieve"); PP-43 ⟂ PP-54 (both type "filter"); PP-6 (the general fact) ⟂ PP-20 and PP-21 (their why lines state it); PP-24 (what dissolving needs) ⟂ PP-22 and PP-39 (their reasons name it).
Draw constraints (⟂ — never two on one test form; from the blind read and adjudication, 8 Oct 2026)
- PP-06 ⟂ PP-02, PP-05 (bundle ids): PP-06 states the rule ("Each part keeps its own properties.") that PP-02 and PP-05 apply.
- PP-40 ⟂ PP-15: the three-of-four set names the slowing action's complement.
- PP-52 ⟂ PP-51: both run on sugar water and a filter; PP-52's stem no longer states PP-51's answer, and the pair still never sits on one form.
Skill: write-like-james @ 2d96464 · built 8 October 2026 by build_tools_types_page.py from grade5/topic09_build/records/TYPES_G5T09.md