Teacher discusses the concept of a medium Solids, liquids, and gasses are mediums Teacher may also discuss the molecular interaction if desired. Elaborate Students are prompted to talk in pairs/small groups on what they have learned from the Cups. Teacher monitors discussion Teacher pauses the discussion to ask questions “How are you able to hear your partner speaking?” “Where is the string?” “What is the medium that is carrying the sound?” Students construct an explanation from the sequence to articulate that air is acting as a medium to carry sound from person to person. Evaluate Students modify their models to incorporate a medium Making Waves – Compression & Transverse Resources https://www.youtube.com/watch?v=7cDAYFTXq3E Objective Investigate the two wave shapes – compression and transverse Engage/Explore: Teacher gives pairs of students a slinky and allows students to play with the slinky for a few minutes. Student Investigation – The stretched out slinky must be held to the surface at all times on either end. Predict Students predict the different ways they can shake the slinky without lifting it from the surface.
Teacher discusses the concept of a medium Solids, liquids, and gasses are mediums Teacher may also discuss the molecular interaction if desired. Elaborate Students are prompted to talk in pairs/small groups on what they have learned from the Cups. Teacher monitors discussion Teacher pauses the discussion to ask questions “How are you able to hear your partner speaking?” “Where is the string?” “What is the medium that is carrying the sound?” Students construct an explanation from the sequence to articulate that air is acting as a medium to carry sound from person to person. Evaluate Students modify their models to incorporate a medium Making Waves – Compression & Transverse Resources https://www.youtube.com/watch?v=7cDAYFTXq3E Objective Investigate the two wave shapes – compression and transverse Engage/Explore: Teacher gives pairs of students a slinky and allows students to play with the slinky for a few minutes. Student Investigation – The stretched out slinky must be held to the surface at all times on either end. Predict Students predict the different ways they can shake the slinky without lifting it from the surface.
Waves-4th-grade.docx