Door 1 · Mission 1 · Free Trial

Free Branches & River Deltas Interactive Game

Play the free Branches & River Deltas interactive simulation. Learn how branching paths split to reach more places through hands-on gameplay. Free Mission 1 access — no account required.

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How This Mission Teaches Systems Thinking

Kids trace how one stream splits into many paths — the same pattern behind lungs, road networks, and decision trees.

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