There are 28 Defuse The Bomb worksheets here, each with answers. These are designed to allow students to get on if confident enough to do so with the answers appearing on the sheet enabling the teacher to help those who require it. These have worked well with online lessons. Topics include algebraic fractions, area and perimeter, transformations, HCF/LCM, related calculations, simultaneous equations and surds. Each of these is available for free individually.

These are designed to allow those students who are confident to get on, checking hat their answers are on the sheet whilst the teacher helps those who need it. There are 6 questions but 10 possible answers.

Two situations regarding mutually exclusive events with six questions and ten potential answers. These are useful for students to get on and check that their answers are on the sheet whilst the teacher can help those who are completely stuck.

Clive has a histogram homework for your students to check. These are designed to get students discussing and thinking about the mathematics. I have also designed this to work online as there is minimal drawing involved (although there is a little).

I needed something on two-way tables that wasn’t just creating and filling them in so produced this. There are ten statements which students must decide whether they are true or false; there are also blanks in the table for them to fill in. These have been working well in online lessons hence I’m am writing these at the moment!

Three diagrams and ten statements or angles that students need to state whether they are true or false. This could lead to nice discussions in class or in live online lessons.

This is a sheet which involves eight questions with answers given on the sheet (there are ten potential answers for the eight questions to avoid guessing). These have worked well for online schooling and allow students who are reasonably confident to get on as their answers appear on the sheet. In the meantime the teacher can help those who are less confident.

Students must work out whether statement is true or false regarding the tree diagram. These sheets work well online in my experience as they can be done from the screen. This involves a tree diagram where the second probability is conditional upon the first.

Eight questions with ten possible answers. These allow the students who understand the topic to move on with the confidence of seeing their answers on the sheet (screen for online lessons) whilst the teacher can help those who need it.

Answer the questions on surface area of cubes and cuboids and reveal the punchline to a fish joke. These work well in class, online or as a homework and offer some reassurance as students find their answers in the table allowing the teacher to help those who really need it.

I am going to be teaching Year 7 some surface area of cuboids and cubes but only had one of these involving prisms which might be a step too far at this point. This was what I came up with. The answers are on the sheet (although there are more answers than questions to avoid default answers at the end) which gives students the confidence to keep going if they are getting questions correct allowing the teacher to help those who really need it.

This is a presentation involving six real recipes (linked on each slide) and their ingredients which students have to work with to make the number of each required. This is designed to create a bit of discussion and the questions get more challenging as you work through them.

Answer the questions regarding sale prices to reveal the joke; you know how these work by now…

There are six slides with a percentage and fraction sales-related question question. This involves calculating sale prices, working out which sale would offer the best price and finding the original price given the sale price. This is designed to create discussion in class.

Calculate the cost of the items required using the deals advertised. Reveal a cheesy joke, the usual gubbins…

This is an exercise in finding the best way of buying what a customer wants given four different “deals” on pricing. You can buy more than required but not less which should add an extra bit of challenge. Workings are essential and I have provided answers on a separate slide each time. There are five to work out and this should lead to nice mathematical discussions. I have also put this in a format that could be used easily online if this is desirable.

Five “Defuse The Bomb” sheets on area and perimeter including: rectangles/triangles, parallelograms/trapeziums, circles, compound shapes (no circles), compound shapes (including circles). These are designed to give students a bit of confidence as the correct answers appear on the sheet whilst you, as the teacher, can help those who are struggling initially. These have worked well in the classroom and online but could also work as homework tasks.

There are six “Defuse The Bomb” worksheets here involving: one on reflection, one on rotation, one on translation, one on reflection/rotation/translation and two on enlargements (one including fractional, one including negative and fractional). These are designed to create discussion in class, by deciding whether the transformations described are correctly described or not. I have designed these with online learning in mind.

Use the histogram shown to work out whether the statements are true or false in order to cut the wires and save the world!

Shade the appropriate areas of the Venn diagrams given the sets listed to reveal the punchline to a joke.