Overview

Materials

• Partially completed improved cars from Lesson 10
• Materials for adding lights and horns: AA  & coin batteries, LEDs, buzzers, paper fasteners, wire,  cardboard,  tape
• Craft materials for decorating vehicles:  Ribbon,  yarn, felt, pipe cleaners, beads, cardstock, pom-poms, etc.

Procedure

Continuing work on improved cars:  Students complete making their cars, test them, troubleshoot, and redesign as necessary.

Instructions for using your car:  Someone might not know what they would have to do to activate the lights, horn or motor.. Ask each student to attach a short instruction guide, such as “Press here to operate horn,” which will tell the user what to do.

Science Notebook

• Describe and draw what you made.
• List the problems that came up, and what you did to troubleshoot each one.
• What did you learn from doing the project?