Let's revisit the diagram we looked at at the start of class.
Note that the words in yellow, "frequency" and "compression," are not illustrated in the diagram.
To review the animated definitions, use the DARTS instructional strategy from Reading to Learn in Science.
Directed Activities Related to Text (DARTs) are a set of during-reading strategies designed to support reflective reading. Reflective reading (as opposed to merely receptive reading) happens when a reader breaks and re-reads challenging phrases and passages, really working at understanding. Reading with a specific purpose in mind and sharing ideas in small groups can help support reflective reading.
This "Reconstruction DART" is a cloze procedure for annotating a diagram. This format challenges students to label the wave diagram. Students predict and complete deleted labels and/or parts of diagrams using text and diagrams as sources of information.
Reconstruction DARTs are problem-solving activities that use modified text. The text has parts missing (words or phrases are deleted, or labels from a diagram). These are game-like DARTs, involving hunting for clues to complete the task. Students generally enjoy them and the results can feed into student writing about a topic.
You may want to revisit the story about Da Vinci and the videos in the prompt and talk to students about the difference between flowing water, wave motion, and what happens to the particles of the medium once the energy has flowed.
Note: a demonstration of frequency and compression could be added with the use of Slinkys. (See Teacher Tips for links.) You may also evaluate students understanding of any of the vocabulary using a slinky or rope model.