Research Project (6 CREDITS) Atomic Structure & Bonding (3 CREDITS) Formulae & Reacting Amounts (3 CREDITS) Diet & Digestion (3 CREDITS) Diet and Digestion TA2 pt. 1 - Digestion Poster. Diet and Digestion TA2 pt. 2 - Digestion Booklet. GCSE Bitesize: Physical digestion.