Barrier Game

Created by M4YC Lesson Study Teams

Curriculum – Geometry and Spatial Sense

For students to sort, classify two-dimensional shapes and three-dimensional figures by attributes; recognize symmetry; relate shapes to other shapes, designs, and to figures; and describe location using positional language.


Students will begin by working in pairs with a divider set between them or sitting back to back. 


  • Unifix cubes – enough for all the students to use


  • One student builds a structure and gives instructions to his/her partner to build an identical structure.

  • Spatial language is key to ensuring the accuracy of the structure building.

  • Once the second structure is complete, the barrier is taken away and the two students can compare their structures.

See the Cube Challenge and Upside Down World for previous lessons.