Free fall and air resistanceQuick check
Science6-83 min
A steel ball and a crumpled paper drop with the air on, then off. Predict, test, explain.Catches: heavier always falls faster · with no air nothing falls · air pushes objects downLibrary
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Every stage runs signed out. Each stage of a sim can serve as a quick check.
BandSubject
4 of 4 stages run as a quick check today. The other 592 sims live in the full Library.Density labQuick check
Science6-83 min
Four objects, one tank. Predict each, lower them in, explain the surprise.Catches: predicts sink or float by size · predicts sink or float by weight aloneComparing fractionsQuick check
Math3-53 min
Which is larger? Predict, place both on a number line in eighths, tap the reason.Catches: 3 is less than 5, so 3/4 is less than 5/8 · fourths are smaller pieces than eighthsSink or floatQuick check
ScienceK-25 min
Rock and wood, read aloud, tap only. Predict, put them in, say why.Catches: small things float · floating is about what it looks likeThe full Library592 generated simulations across 26 disciplines, with full multi-stage runs.
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