Topic 9 How to take a mixture apart — what needs James (22)
16 question types · 6 lessons. Tap a button on each card; the ruling goes to the build and the card shows it as ruled.
Question types
Question types (16 to rule on) →
The lessons (6)
Each lesson in teaching order: its one-line summary, the article, the script and the quiz, then your ruling.
Topic 9 · Lesson 1 · Video / article words: 149 / 326 · Quiz items: 8 · Figures: 8
Lesson 1 Why you can get the parts of a mixture back
Each part keeps its properties; the iron is still magnetic, the peas still bigger, the red beads still red, so a property picks each back out
Topic 9 · Lesson 2 · Video / article words: 150 / 424 · Quiz items: 10 · Figures: 7
Lesson 2 Melted or dissolved?
The same sugar in a hot pan (melted) and in cold water (dissolved); salt both ways; the ice cube on a warm plate; melting needs one material and warmth, dissolving needs two
Topic 9 · Lesson 3 · Video / article words: 150 / 275 · Quiz items: 9 · Figures: 6
Lesson 3 What speeds up dissolving
Three fair pairs on one glass: stirring, warmer water and smaller pieces speed dissolving up; the opposites slow it down; why is for later grades
Topic 9 · Lesson 4 · Video / article words: 148 / 394 · Quiz items: 10 · Figures: 7
Lesson 4 Separate solids by a difference you can see
Find the difference, then the tool: size → a sieve (coined); color → by hand; sand you can see in water → a filter (coined, "a sieve with holes too small to see")
Topic 9 · Lesson 5 · Video / article words: 149 / 339 · Quiz items: 9 · Figures: 6
Lesson 5 Separate with a magnet
Grade 3's magnetic metals word for word; the magnetic force pulls every steel can up and leaves the aluminum; clips from beads; filings from sand
Topic 9 · Lesson 6 · Video / article words: 150 / 409 · Quiz items: 10 · Figures: 7
Lesson 6 Choose the separating method
Name the property that is different, then pick the method; the filter tried on salt water and nothing left on the paper; water goes into the air and salt does not, so let the water evaporate
Skill: write-like-james @ cca3af6 · built 8 October 2026 by build_tools_needs_you.py