Updating a spreadsheet Whiteboard exercise Play

Using equations to calculate masses Whiteboard exercise Play

Using equations to calculate masses Student activity Play

Using ITC in calculations Whiteboard presentation Play

Using ITC in calculations Class activity Play

Using mean bond enthalpies in calculations Chart Play

Using mean bond enthalpies in calculations Chart Play

Using the diagrams in real life Whiteboard exercise Play

What can you afford in the Internet Café? Student activity Play

What percentage of one number is another number? Student activity Play

What was the price of the dress? Animation Play

Where can you buy it cheaper? Student activity Play

Yoko's and Lena's savings Student activity Play

Yoko's savings Whiteboard exercise Play

 What can you afford in the Internet Café? Whiteboard exercise Play

 What can you afford in the Internet Café? Whiteboard exercise Play