Spreadsheet that calculates chronological ages. It works (I hope!) correctly for months of different lengths etc. (No awkward cludges of dividing days by 30 to get months.) First tab on the sheet is set up so you can enter a whole class. The second tab is just for quickly checking single dates of birth. The main calculations in the first tab are carried out in columns D to J, which are hidden. If you look at the formulae, you will see that the formula is far from elegant - but calculating chronological ages is not an elegant process! I realise that the year calculation could be simpler, but I couldn't be bothered to edit it...

Brackets are compared to party bags! So expanding is just finding out how many items altogether. Hopefully simple, visual explanation of concept followed by some quick questions. Used alongside mini-whiteboards.

This links factorisation of linear expressions (where the term in the bracket is in the form y=m(x + c/m)) to the intercept with the x-axis. It lays the foundation for the same concept when factorising quadratics. It could be developed by examining y = c - mx or y=m(ax + c/m).

Worksheet generator: 6 sets of 3 randomly generated activities based on key mathematical skills selected by the teacher on single page for printing. Add, subtract, multiply, divide, place value operations, decimals, negatives, BIDMAS, rounding, percentages, fractions... Each pupil in the class is allocated 3 topics to complete in lesson/homework. Idea is to get all 3 questions right for your 3 topics. When pupil gets all 3 questions correct for any given topic, they get a sticker on a pupil record sheet. 3 stickers for that topic means they have mastered it and will not have to do it again :) Warning: Macro-enabled spreadsheet. Macros MUST be enabled when you load the sheet in order to use the navigation and copy/paste buttons. Read the Instructions document for further details. A Teacher Record (for use on your computer) and a Sticker Sheet (to put on your wall) are provided. [12/7/16 Minor improvements/additions]