This is a topic that many pupils find extremely difficult to grasp. I tried to simplify it as much as possible by reducing the complexity with the following questions, focusing only on finding missing lengths given several horizontal or vertical lines.

Adding and subtracting negative numbers FULL LESSON PLAN on how I use this lesson here: https://mathagogy.wordpress.com/2015/11/16/adding-negative-numbers/ Instructions for activities are in the notes section of the powerpoint. Some questions used from MEP www.cimt.plymouth.ac.uk/projects/mep/ Extensions from donsteward.blogspot.com, and www.mathspad.co.uk/

This is a drill generator. It generates drills for multiplying by powers of 10, dividing by powers of 10, halving, doubling, and rounding - key skills in which pupils don't get enough sustained practice! I've uploaded it mainly as an example of how to generate drills which lead to intelligent practice. You may have to modify some of the harder questions (e.g. powers of 10) depending on your class; but hopefully, in looking at the formulae used, you should be able to modify it easily. Feel free to message me on Twitter @HinTai_Ting if there's any parts of it you don't understand. How to use: You can project or print straight off Excel onto a sheet of A4. I use this to make starter booklets: to do that, I copy the table and paste it into a word document, landscape orientation with narrow margins, and it comes out looking funny. I usually have to select all, in word, and reduce the font size, and then it will all fit perfectly onto one side of A4. *Highlighted in MathsConf9, March 2017, in Dani Quinn's 'Drill and Thrill' workshop.

This is a customizable times table generator in Excel. It is a real aid for students to gain fluency and speed in their times tables, multiplication facts and division facts. Features: Ideal for projecting: 100 questions fit just onto a projected screen. It is also easy to print off fully randomized worksheets. You can choose which times table, or times tables to test, and how high you want the multiplier to go to. For example, if you want to just test the 4 times table, up to 4 x 15, that's very easy to configure. Alternatively, if you want to test everything from the 2 times table up to the 14 times table, that's also very easy to do. Instructions are on the spreadsheet - scroll down and check each sheet (along the bottom). Press F9 to refresh and generate a whole new worksheet. This was initially based off a very similar spreadsheet I found on TES here: https://www.tes.com/teaching-resource/times-table-generator-6110067 but I've added a few more bells and whistles. Thanks!

A worksheet of 10 GCSE-style questions on loci & regions. These go beyond 'draw a perpendicular bisector' to questions more like the ones you see on GCSE papers, for extra practise. There aren't many worksheets on this topic, and the ones that are don't often fit on one page, so I made one myself with pencil and paper. For the right measurements, print onto one side of A4.

I had a quick look and couldn't find anything similar. This is just the formulae from the formula sheet for Edexcel Higher tier maths papers, ready to be projected onto one slide, with clear formulae. Useful for projecting and freezing during a mock exam/ exam practice lesson.