Topic 17 Why fresh water is scarce, and how to protect it — what needs James (36)
30 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 (30 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 17 · Lesson 1 · Video / article words: 149 / 286 · Quiz items: 8 · Figures: 5
Lesson 1 How little of Earth's water is fresh
Earth's water as 100 squares: 97 salt water in the ocean, 2 frozen, 1 we can reach (nearly all under the ground), lakes and rivers less than 1; rain is fresh but rivers carry it back to the ocean; Rhea's belief met after the evidence
Topic 17 · Lesson 2 · Video / article words: 149 / 393 · Quiz items: 9 · Figures: 10
Lesson 2 Make a bar graph of where Earth's water is
Grade 4's two rules recalled word for word; the side in tens to 100 because the ocean's number is 97; names and bottom label; a line at every number; the ocean bar just under the 100 line; "less than 1" in place of a bar; the ocean bar towers
Topic 17 · Lesson 3 · Video / article words: 145 / 359 · Quiz items: 9 · Figures: 8
Lesson 3 Let the graph answer the question, and only that question
Four questions tried on one graph (yes / no / yes / no): a place on the graph, a place not on it, how much against how salty; three more in a table; data answers the question it was collected for, and only that; Rocco's overclaim answered
Topic 17 · Lesson 4 · Video / article words: 149 / 348 · Quiz items: 8 · Figures: 7
Lesson 4 How a town cleans its used water before it goes back to the river
Used water straight back: the river turns cloudy and smelly and the fish die; cleaned first: screens, settling tanks, tiny living things, a test; the river below the town stays clean downstream; the town built the center itself
Topic 17 · Lesson 5 · Video / article words: 150 / 265 · Quiz items: 8 · Figures: 7
Lesson 5 Design the fix: name the damage and plan a change
The board's three lines on the school garden's hose: the resource and how we use it; the damage (the reservoir runs short); the plan (barrels under the gutter pipes); the barrels' criterion recalled
Topic 17 · Lesson 5b · Video / article words: 147 / 245 · Quiz items: 7 · Figures: 6
Lesson 5b Design the fix: say how the plan helps
The chain followed step by step from the rain on the roof to less water taken from the reservoir; the fourth line; the honest limit (a dry week empties the barrels; the plan cuts the damage, it does not end it)
Skill: write-like-james @ 2d96464 · built 8 October 2026 by build_tools_needs_you.py