Read this to the class:
Bear has a little house made from a shoebox. Bear has a problem. In the daytime, Bear wants a window that lets the sunshine in so the house is bright. But at bedtime, Bear wants a curtain that keeps the light out so it's dark enough to sleep. Bear doesn't know what to make them from. Your job: test materials with a flashlight and find the best window and the best curtain for Bear.
Children work in pairs. There are two jobs that swap after every two materials: the Shiner holds the flashlight, and the Holder holds the material in front of the wall and says what they see.
In the full lesson PDF
- Bet (5 min)
- Hunt (15 min)
- Reveal (10 min)
- Act (5 min)
- Background for the teacher
- Assessment
- Student sheet
US Letter, prints cleanly in black and white. The student sheet is on its own page, ready to photocopy.