3 games from the Cells to Systems simulation: Order It, Match It, Predict It. Each one has a Warm up, Explorer and Expert level.
Order from smallest to biggest. Drag the cards into the boxes in the right order, then press Check. You have 2 tries for each one.
Match each cell to its job. Drag each card to its partner – or tap a card, then tap its partner. You have 2 tries for each one.
Cells and systems. Read the question, think, then tap your answer. You have 2 tries for each one.