Moles Calculations (n=m/Mr), GCSE AQA Chem, Lots of Maths.

DEAL: 2 LESSONS WORTH OF CONTENT, whole lessons plus resources.

Lesson builds upon the last lesson on moles (https://www.tes.com/teaching-resource/introducing-the-mole-and-avogadro-gcse-chemistry-aqa-11724709 or search "MrLaws moles") with a recap of the essentials. Then an introduction of the equation (n=m/Mr) with an example, students try simple examples, all answers provided, check to see if they can rearrange an equation (two routes for either yes or no), more difficult calculations using an additional skill of rearranging equations, introduction to stoichiometry, larger calculations (example then lots for the students) layering the skills.

The idea behind the student calculation sheet in terms of differentiation is for the student or teacher to decide where they start. They are much easier at the start and much more difficult at the end; at the beginning the numbers are quite simple then standard form, rearranging equations and different stoichiometries are layered in. More able students could start half way through and it should take them the same (ish) amount of time to complete the questions as for a less able student who starts at the beginning with the end goal of getting half way through. This means that both higher and lower ability are challenged but also supported appropriately by starting at the right point.

This was planned for AQA GCSE Chemistry trilogy and triple but could be used for A-Level applied science and even Y12 chemistry if they need a lot of scaffolding.