This task will help to learn about and systematize one of the robot’s simplest functions: driving forward.

Please find a printable PDF of the task description, and student worksheets part 1 and part 2 here.

**Materials needed**

- Measuring sticks/meter sticks
- Tape to mark exact start and finish
- EV3 robot in base configuration as per the instruction booklet (no sensors or attachments are needed)

**Key understandings**

- Students will gain experiences with connecting the robot to the iPad (or another device), and downloading and running program.
- Students will learn how to program the robot to move forward.
- Students will gain a spatial sense of the proportion of wheel rotations and distance traveled.

**Note for teachers**

Different surfaces affect the robot’s driving: try to direct students to an even floor without much friction (carpet is not ideal)

This exercise can be used to practice measurement strategies, for instance lining up the measurement stick and the robot’s wheels – encourage students to use the robot’s white wheel holder

1 wheel rotation makes the robot travel approximately 17.6 cm

Decimal numbers are important in this exercise. Having a printout of a number line with decimals available will help students learn to use decimal numbers to program travel distances. Do not worry if you have not taught decimal numbers yet. Students can learn to use them quickly in this lesson.

**Note**: Language is important. **Wheel rotations** are a count – asking **how many** wheel rotations in most appropriate. Questions about the **robot** refer to a distance traveled – asking **how far** the robot travels is most appropriate

Decimal numbers are important in this exercise. Having a printout of a number line with decimals available will help students learn to use decimal numbers to program travel distances. Do not worry if you have not taught decimal numbers yet. Students can learn to use them quickly in this lesson.

**Note**: Language is important. **Wheel rotations** are a count – asking **how many** wheel rotations in most appropriate. Questions about the **robot** refer to a distance traveled – asking **how far** the robot travels is most appropriate.

**Student Worksheets:** Move Forward Part 1 Move Forward Part 2

**Move Forward Exercise – Part 2**

How many **wheel rotations** will your robot need to travel **17 cm**?

**Estimate** (guess) how many wheel rotations will your robot need to travel **51 cm**?

Use your estimated number to program your robot. How far did it travel?

Setting your **wheel rotations** to 1 makes the robot travel 17 cm. How can you make it travel **half that distance**, and how far does

it travel then?

**Complete the following:**

Robot travels 17 cm.

Robot travels ________

Robot travels **51 cm**.

Robot travels _________________

Robot travels _________________

Robot travels **8.5 cm**.

Robot travels **0 cm**.