Idiophone

thingiverse

Using a 3D printed shell, students explore sounds and learn about the scientific process by asking, "What if" questions. They will fill the rattles with different materials to see what that does to the sound of the rattle. Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator (5th Generation) Rafts: Yes Supports: No Resolution: 0.2mm Infill: 10% Notes: I set the printer to standard settings. I do not have much luck without rafts, so I always use them. How I Designed This This was designed by Werner Stein. I chose this design because the handle is removable. Students can fill with a variety of objects, then empty it and reuse it with another material. I printed out very nicely. Standards CCSS Overview and Background Project: The Science of Idiophones Idiophones are instruments that make sound when they are struck, shaken or scraped. Students will create idiophones with a variety of materials to test the sound waves produced by each. Objectives Students will answer the essential questions: What is sound? What are the characteristics of sound? Physical and mathematical concepts can be used to describe the patterns and phenomena of sound. Sound is produced by a mechanical vibration. Different materials will create a different vibration, and therefore a different sound. The vibration, and therefore sound, can be measured. Skills Learned Next Generation Science Standards MS-PS4-2 Develop and use a model to describe that waves are reflected, absorbed or transmitted through various materials. Common Core State Standards: CCSS.Math.Content.6.SP.B.5b Summarize numerical data sets in relation to their context, such as by describing the nature of the attribute under investigation, including how it was measured and its units of measurement. CCSS Standard for Mathematical Practice: CCSS.Math.Practice.MP2 Reason abstractly and quantitatively. Lesson Plan and Activity Duration: If the students design and print out their idiophones, then this lesson may take a week or more to finish. If the idiophones are prepared ahead of time, then this lesson can be completed in 2-45 minute classes. Activity: Students will be given one maraca for each group. They will also have access to a variety of materials to place in the maraca. They will formulate a hypothesis to determine which material will create sound with the greatest frequency and which will give the most intensity. The students will then fill the maraca with a measured amount of material, then shake it in front of the microphone. They will use the oscilloscope feature of the audio software to measure the frequency and intensity. They will repeat this for different materials and different amounts of materials and see if their hypothesis was correct. Students will collect the data and use Microsoft Excel to compile the data. They will summarize their results in a report form. Materials Needed Teacher should have the empty shell of the maraca ready for students (one per group of students) Various materials to put inside of the maraca to make different noises: Different materials - metal bearings, plastic parts(legos), sand, rocks Random materials found (In this example, paperclips) different shapes of the same material - plastic block, plastic sphere. Computer with microphone with "audio-tester" software