JerryFrog's Shop
JerryFrog's Shop
5.005 reviews

I have 12 yrs experience teaching Maths and Physics for CAIE & EdexceI GCSE and AS/A2. The resources are mostly animated powerpoints that cover one complete chapter, plus a few crossword puzzles and even fewer articles on ad-hoc topics.

docx, 1.28 MB
docx, 1.28 MB

Parallelogram area in under a minute. Using the position vectors of 2 corners from another corner, (ai, bj) & (ci, dj), area = |ad - bc|. Geometric and algebraic proofs are included.

Creative Commons "Sharealike"

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