Peter D. Riley

• Physics Now! 11-14
• Cambridge Checkpoint Science 2
• Cambridge Checkpoint Science
• Cambridge Checkpoint Lower Secondary Science
• Chemistry Now! 11-14
• Circuits & conductors
• Cambridge Checkpoint Science Teacher's Resource Book 3
• Ohanian's Physics/Study Guide
• Biology Now! 11-14
• Cambridge Checkpoint Science Workbook 1
• Electricity (Straightforward Science)
• Floating and Sinking (Everyday Science)