Give guidance and feedback to students' plans, encouraging, refining, and helping them to be responsible for their own learning. Maintain high expectations for completion of chosen options. Summarize by reviewing the whole, bringing students "full circle" to the experience with which the learning began.

Utilize knowledge by creating "musical instruments" from simple materials.

Objective: Students will utilize their knowledge of sound by creating "musical" instruments from simple materials. They will then evaluate them according to pitch (pitches) and loudness.

Activity: Students will create their own sound maker from 1) soda straws (1 pitch instruments or multi-pitch instrumenhts, 2) water and drinking glasses (bells, chimes), 3) combs and wax paper (kazoos), 4) rubber bands (string instruments), or 5) rulers (percussion instruments). Have students consider the amplitude and pitch of their instruments. Have students compare and contrast the pitch and amplitude of their instruments with those of other students. Have students graph themselves from instruments of loudest to highest pitch. Have students explain how their instruments work.

Materials: Rubber bands, rulers, combs, wax paper, soda straws (various diameters), drinking glasses with various amounts of water, mallets for striking glasses.

Assessment: Students will understand how to create "instruments" of various pitches and amplitude. Students will gain an understanding of how these instruments work.