Lego Mindstorms was a great step for Lego in the late 90s. The Lego NXT arrived in time to play with as a new Primary teacher.
An early project – entered into the local Science Festival – was to race a Lego NXT robot in a giant maze against a woodlouse in a Lego maze. The first one to make it out won. In the time that we had to present how we had gone about programming the robot to use ultrasonic, a bumper and a juddering, bumping technique of hit and miss to navigate the bigger maze, the plucky little woodlouse had quietly slipped away. Woodlouse 1, NTX 0