Excalidraw is a free, open-source whiteboarding app for creating hand-drawn-style diagrams, mind maps, circuits, and flowcharts. Runs in the browser—no download required.
Sketch biological systems, draw chemistry diagrams, plan engineering designs, or map ecosystem relationships. Share the link for real-time collaboration as students problem-solve together.
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Excalidraw
Free collaborative whiteboarding tool with intuitive drawing interface for STEM teaching.
Pro tip: Use Excalidraw's infinite canvas to create a living diagram that grows throughout a unit. Students add connections, annotations, and refinements as understanding deepens.
