Computer Science

Engineering Safety Vests: Signal Bracelets

Upper Elementary Impacts of Computing Algorithms & Programming In Classrooms

Students use MakeCode and micro:bits to design a signal bracelet that displays signals when activated by kinesthetic inputs.

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unit Overview

This computer science module can be taught independently but is intended to be taught after the YES Elementary Engineering Safety Vests unit. Students design a signal bracelet as a smaller, lightweight alternative to a safety vest. They identify three signals they want their bracelet to send and determine how to communicate those messages using the LED display on the micro:bit.

3 lessons
45-50 minutes per lesson
Student materials available in Spanish
Computational tools used: micro:bits, MakeCode (free and web-based)
Materials needed: Materials kits are not available for purchase for computer science modules

Standards Alignment

YES units align with state and national science standards, integrating seamlessly with popular elementary science curricula.

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unit Resources

Digital Resources (FREE)

YES provides these materials free of charge! Use the link below to download resources from our Google Drive.

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Module Map

Students learn about the problem and how they will address it using a signal bracelet. Students explore inputs and outputs on the micro:bit, then work in groups to modify their safety vest signals for the micro:bit’s LED display.

Students explore kinesthetic inputs on the micro:bit. They work in groups to match their outputs (LED displays) to inputs that will help them communicate their messages clearly.

Students work in groups to build their algorithm, download it to their micro:bit, then test it as part of a signal bracelet. Groups get feedback from others about how clear the meaning of their signals are and improve their algorithm if time allows.