**Understanding Waves**

Renee Allen Louis Wirth Experimental

4959 South Blackstone

Chicago IL 60615

(312)535-1410

**Objectives**:

1. Eighth grade students will gain an understanding of waves.

2. Eighth grade students will gain an understanding of the properties that all

waves have in common.

3. Eighth grade students will gain an understanding of the types of Waves.

**Materials Needed**:

1. Ripple Tank 4. Paper (Notebook)

2. Tuning Forks (3) 5. Pencils(1 for each group)

3. Rope (Make two pieces 2 meters each) 6. Springs (Slinky) & (Door Screen)

**Strategy**:

Arrange five stations:

Station 1 Ripple Tank

Station 2 Tuning Forks and bottle of water

Station 3 Rope tied to door knob or other solid object

Station 4 1 Spring (Slinky)

Station 5 1 Spring (Screen Door)

Divide the class up in groups and have each group take a station. Have the

students work with waves at the different stations and write down two

observations at each station. Student groups should spend at least five minutes

at each station. When all groups have spent time at each station, then class

should take their seats and share on board the observations made at each

station. Each group should have a scribe and a scribe can be appointed to

record all observations on the board. When all has been recorded, the teacher

can go over the terms with diagrams and use observation. The terms that need to

be covered are: waves (mechanical and electromagnetic), transverse,

longitudinal, amplitude, wavelength, frequency, and speed. Next let the

students go back and explore the different stations.

**Performance Assessment**:

Each student in the group would have the same grade

5 points ----------5 observations

4 points ----------4 observations

3 points ----------3 observations

2 points ----------2 observations

1 point ----------1 observation

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