Unit of Instruction

Is It Strong?

Elementary School
Targeted Grade Level
PreK - 5th

In this unit, children expand on their growing understanding of engineering and what it means to be an engineer. The activities engage students with a real-life problem that engineers often face: how to make things stronger. Students also learn part of the design cycle by testing their designs and improving them. 

Included Lessons
  1. Is It Strong? - Unit Overview
  2. How Much Load Can It Hold?
  3. The Long Haul
  4. Make Your Castle Strong
  5. Free Build
Mobile STEM Lab Requirement
ROK Blocks Mobile STEM Lab
NGSS Learning Dimensions


Scientific & Engineering Practices

  • Asking questions and defining problems

  • Developing and using models

  • Planning and carrying out investigations

  • Constructing explanations and designing solutions


Crosscutting Concepts

  • Patterns

  • Cause and effect

  • Scale, proportion, and quantity

  • Structure and function

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