Fill all of the empty space with the elongating blue square.
Use your arrow keys to move the growing rectangle.
40 puzzles to solve in all!
More Games to Play
Fill Tracks - Learning Connections
Essential Skills
Problem Solving - 40 brainteasers
Geometric Thinking - play with filling unique configurations
Spatial Reasoning - visualize pathways

Common Core Connection
MP1 - Make sense of problems and persevere in solving them.
MP7 - Look for and make use of structure.
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