Working through more advanced lesson plans for Cubelets® robot blocks? This expansion pack provides the supplemental pieces to the Cubelets TWELVE or Cubelets TWENTY. With the Minimum, Maximum and Threshold blocks students can create more complex robots, while the Temperature and Knob blocks expand the range of robot senses. The Bar Graph block helps students interpret and troubleshoot their construction’s behavior. It’s everything you need to challenge students’ creative thinking skills.