How many more? Student activity Play

How many seats there are? Whiteboard exercise Play

How much did it cost before? Student activity Play

How much do we have to pay? Student activity Play

How much does it cost now? Student activity Play

How much does it cost? Student activity Play

How much does it cost? Whiteboard exercise Play

How much does it cost? Student activity Play

How much does it weigh? How much does it cost? Student activity Play

How much does the notebook cost? Whiteboard exercise Play

How much does the stamp cost? Simulation Play

How much does the ticket cost? Whiteboard exercise Play

Identical data, different qualities Student activity Play

Imperial units of area Student activity Play

Infinite convergent geometric series Class activity Play

Infinite convergent geometric series Whiteboard presentation Play

Inflation Student activity Play

Inflation Whiteboard exercise Play

Iron, the most common metal Student activity Play

Iron, the most common metal Whiteboard exercise Play

Lenna's shopping Whiteboard exercise Play

Life cycle of the common liverwort (Marchantia polymorpha) Animation Play

Ligand types Student activity Play

Line that is tangent to both circles Animation Play

Miscellaneous problems Student activity Play