Lego Instructions

Students will learn how a computer thinks and processes information through algorithms.

Materials:

Time Needed: 60 minutes

I Do: 15 minutes

Explain that computers don't "think" like humans; they follow a series of step-by-step instructions, called algorithms
- Computers need detailed instructions because they can’t infer or make assumptions like people do
Tell students that they’ll be simulating how computers follow instructions by writing a set of steps to recreate a Lego structure
- Must be specific!
- Demonstrate an example (e.g., "Place the red 2x2 brick on top of the blue 4x1 brick.") and avoiding assumptions (e.g., not just saying "put the brick on top")

We Do: 35 minutes

Split the students into pairs
Given a pre-made lego construction, have one student write a series of descriptions/instructions on the index card
Then, using the instructions that were written, have the other student try to rebuild the Lego structure
After they are done, have them compare their thought processes and notes. What was unclear? What could be improved?

You Do: 10 minutes

Group discussion with the entire class
- How was writing instructions like giving directions to a computer?
- What challenges did you face when trying to follow the instructions?
- How does this activity help you understand how computers follow code?