This steering wheel uses the HiTechnic accelerometer to determine the angle and send it to another NXT car over the bluetooth. The motor acts as a speed controller.

This lesson plan and student "journal" page ask students to design and build moveable models of animal structures. A rubric is included for students to use to critique their models.

Using beams, connector pegs, and craft materials (such as foam and glue), students create a handle for a stamper. Students will need to build the handle and attach the foam shape. Students test it out by using ink and putting a stamp on paper.

Using the Hi Technic Accel Sensor, these two programs send (via the Mail Icon) positional data from one NXT to another NXT, which receives that value and drives forward and backward. The speed of the motors is relative to the angle the first NXT is tilted.

How can the robot know the exact tile it is on, when moving around in a room with floor tiles sized 1x1 foot each?

(What if we want to know the exact position to the closest centimeter?
What if we also need to know the exact direction it is facing?
Beginning to sound lik...

In my physics class, the students modified their "Going the Distance" robots to push on a ball. This was an opening activity for my "Force and Motion" unit. We used some fabric taped to the floor as a hole.

Today you won't have troubles to buy an electronic compass from the shelf. But, sometimes you want to understand - or as a teacher - to explain how the compass direction can be turned into digital information. This sensor got its name, because it is made of a few LEGO pieces, the RCX, a magnet, a li...

Eighth-grade students built LEGO balances that were accurate to within half a gram.

Eighth-grade students built LEGO balances that were accurate to within half a gram.

In this activity, the students first choose an animal that they want to create and think about the types of motion that the animal does. Then, they approximte the animal's motion using gears and motors. This is a good way to use gears and motors in a situation other than a car. At the end, present y...