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
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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