The Mysterious Balloons
By Winnie Koo
Students will investigate unknown solids using the sense of touch.
3 to 5 small zipper-typed plastic bags or baby food jars, 3 to 5 un-inflated balloons (each with a different color), 1 wide-stemmed funnel, 3 to 5 types of solids: rice, beans, salt, and so forth.
Mystery Solids-Observation Sheet
|1.How does the surface of the balloon look?|
|2.Squeeze the balloon. Do you hear any sounds?|
|3.Describe how the balloon feels.|
|4.Sniff the balloon. Can you smell anything?|
|5.What do you think the contents of the balloon are? List reasons for your answers.|
|6.Name the actual contents of the balloon.|
Partner pairs of students. Direct each student to explain to their partner how they made their decision about which solid was in the balloon.
Teaching Science with Toys, 1993