2. Which surface gets warmest in the sun? (K-PS3-1)
Needs black and white paper, small objects, a sunny window, a warm-or-cool card per child. Each child owns one object.
Small objects sit on black paper and white paper in a sunny window, and after a while the class feels them by hand to find which ones got warm. If the class has already named the sun as the thing doing the warming, it puts that idea to work. As usually run, though, it’s a touch-and-tell: every hand is on the windowsill at once, and you can’t tell which child noticed what.
The fix
- Before anything goes in the window, ask the class what will warm the objects up, and wait until someone names the sun.
- Give each child one object to set on the black paper or the white, and only its owner touches it.
- After the wait, each child feels their object and holds up a warm or cool card, so every hand on the windowsill has a claim to make.
No page for this one; the fix above is the whole of it.




