Photosynthesis using pond weed *BIG PRACTICAL* Bicarbonate indicator and the effect of distance

Resources developed as part of a *BIG PRACTICAL*. These are designed to practice a skill - usually using a preliminary investigation - then a full investigation write up. These are tailored toward the way the new GCSE (2016 on wards) is designed to test practical skills as well as context.

First lesson
Resources: bicarbonate writing frame (+ppt)
Practical: Pupils use tin foil to cover one test tube containing pond weed and use bicarbonate indicator to show photosynthesis (+respiration HIGHER). Practical procedure notes in PPT (consult health and safety or use approved procedure)
Activities order: Starter looking at the photosynthesis equation and the role of chloroplasts, Practical and write up for first practical.

Second/Third lesson
Resources: Distance writing frame (+ppt)
Practical: Collecting gas using a measuring cylinder and investigating the affect of distance of a lamp.
Activities order: Introduction to aim and prediction. Pupil should be able to complete practical independently give guidance and previous practical. Graph, conclusion and evaluation scaffolding also provided but may need to be scheduled for another lesson.

Two PowerPoints available with results as practical can be slightly temperamental.