EthioKids · Grade 4 · 4-PS3 / 4-PS4 / 4-LS1 / 4-ESS2 / 3-5-ETS1
Roller Ramp Lab
Grade 4 · Science Discovery
Predict · Test · Explain
Science Discovery Lab · 4-PS3-1
Predict · Test · Explain
🔎 Investigation question
Compare a ball rolling from two different ramp heights.
A class releases identical balls from ramps of different heights. The taller ramp produces a faster ball at the bottom.
Challenge 1 · Predict
Which starting ramp is likely to send the identical ball farther?
🧪 Experiment station
Choose a setup and run the model
Low ramp: 10 cm
📋 Lab observations
Make a prediction, then run this setup to observe the outcome.
Comparison bars show illustrative relative results, not live laboratory measurements.
Challenge 2 · Explain with evidence
Which recorded result supports your prediction?
Run both setups to unlock this evidence challenge.
🦁 Science coach
Keep the ball and surface the same for a fair comparison.
Science Lab practice is formative: it does not award stars or mark a lesson complete. Graded questions follow below.
🔬 Evidence skill check 1 of 3
Which variable did the class change?
Roller Ramp Lab