Show students multiple examples of iteration in Scratch to help them understand and recognize more abstract programming patterns.
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- Helping students identify and understand similarities between pieces of code that use iteration will improve their understanding of iteration, loops, and variables.
- Applying and customizing programming patterns, like iteration, is a powerful tool for programmers.
- All of the scripts below have the same overarching structure, iteration.
- Say the numbers from 0 to 9. (top right)
- Check out Colleen’s June 2015 Scratch Meetup video for more details about counting from 0 to 9 using a repeat block!
- Play a scale. (bottom right)
- Check out Colleen’s YouTube video Playing Scales: With and Without Variables for more information!
- Change the tempo of a playing drum. (bottom left)
- Check out Colleen’s YouTube video Changing the Tempo in A Repeat for more information!
- Increase the size of dots. (top left)
- Check out Colleen’s YouTube video Increasing Dots Using Iteration about changing the size of dots using a repeat block!
