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Grade 4 Science · World 9: Machine Workshop · Level 62
Design Challenge
Choose machines to complete a task and explain the choice.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 62
- Now you're the engineer! Start with the task, then pick the machine that fits the job.
- Need to raise something from below? A pulley changes your pull's direction. Need to get something heavy onto a truck? Use a ramp.
- Be ready to explain your choice: tell which force the machine changes, and how.
- Try it with a grown-up: build a lift with a spool, string, and a cup. Test how much it can raise, then improve it.
Georgia Standards of Excellence in Science:
- S4P3.c — Ask questions to identify and explain the uses of simple machines (lever, pulley, wedge, inclined plane, wheel and axle, and screw) and how forces are changed when simple machines are used to complete tasks. (Clarification statement: The use of mathematical formulas is not expected.)