Maya's Big Question
Sam pulls the box once, and it slides 150 cm. "Done!" he says. "It went 150 cm."
Sam wants to know if a bigger pull makes the box go further. Has he found out?
Page 1
Science · Grade 3 Science
Chapter 1: Forces and Motion
Plan it, run it, and argue for what you found.
Sam pulls the box once, and it slides 150 cm. "Done!" he says. "It went 150 cm."
Sam wants to know if a bigger pull makes the box go further. Has he found out?
Make your guess to turn the page.
Still to come: 7 pages · Words to Know · What We Learned · 4 questions · Explain It in Writing · Ask and Wonder
The idea this lesson is working on — Children treat the number as the finding. Sam stops at "it went 150 cm"; Maya plans, repeats, catches a run that went wrong, and writes a claim with evidence and reasoning. Ask: what question does your number answer, and how do you know the pull caused it? Reasoning is the part children leave out, and the part that carries the learning.
Plan before you start — Write down the question, what you will change, what you will keep the same, and what you will measure. Doing that first is what stops the investigation from drifting halfway through into whatever happened to be easy.