|4332 N. Paulina Street
|Chicago IL 60613
Students investigate unknown solids using the sense of touch
3-5 small zipper type plastic bags or baby food jars,
3-5 uninflated balloons (each of a different color)
3-5 types of solids with which to fill the balloons such as the
beans, salt, powder such as flour and corn starch
- Instruct students to use their senses (except taste) to
investigate the set of balloons and answer Questions 1 – 4 on the
"Mystery Solid" Observation Sheet (provided).
- After ample investigation time, have the groups record what the
thing is inside each balloon on the Observation Sheet.
- Call on each group, asking the spokesperson to tell what the
group thinks the contents are and to provide some supporting evidence
for these conclusions.
- Ask students what they might use to make the task of identifying
the balloon contents easier, but remind them that they still cannot
open or cut the balloons. After discussion, give each group a set of
reference containers, telling them that the reference containers hold
the same materials as the Feely Balloons
- Ask students to match balloons with sample containers and record
their matches on their Observation Sheets.
- Reveal the actual contents of the balloons by cutting open one of
the sets of balloons and allowing students to examine the contents.
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