This fourth grade unit on waves and information aligns to NGSS* standards 4-PS4-1, 4-PS4-3. Students will learn about waves, wavelength, amplitude, the human ear and how we hear, pitch, frequency, and different types of information transfer. Teaching sound waves and information transfer? Get ready for some unexpected science experiments!➡️ You introduce pitch, and suddenly the class is squeaking like chipmunks.➡️ You mention how we hear, and someone gasps, “Wait… ears have bones?!”➡️ You start