Match the pairs of Simultaneous Equations to their solutions to read the message. If they can read the message it must be right I guess. The standard one is very challenging so I did one with all positive solutions. Should I do one with non-integer answers? Personalised messages by request. Apologies... I had to redo this after I found a glitch. but I have checked and these are now "good to go"!

30 questions. match the equation to the two points to decode the message. Students can find shortcuts...but not for many! Personalised messages available by request! Comments welcome...should I use non-integer gradients?

Another coded message Standard form. If they can read the message they can either deal with Standard Index Form or they used a calculator...Grrrr! I will add separate sheets for multiplication and division soon. Comments welcome Personalised messages by request.

30 sets of 5 numbers. Match them with the mean, median,mode and range to decode the message. If you can see the message developing correctly, you know they are doing okay. If it looks like gobbldeygook…intervene! Bespoke messages by request. This message reads: When people say I am mean are they implying that I am average? I can do worse than that! Any comments welcome.

30 questions 30 answers. Students match the correct answers to the questions to decode the message. Self checking...if they can read the message it is correct! One sheet has negatives for added challenge. Personalised messages by request.

Uses the first 26 prime numbers to code the 26 letters. Each number is formed by multiplying the" prime numbers" of the word. This is a challenging task and really makes students think about how to be sure a number is a factor. Discussion of "good practice" eg ends in 0, 5 and 2 are factors. start with the vowels first. use the words you have to guess the rest! Bit of cross curricular too...anagrams...who would have thought vowels is an anagram of wolves? Comments welcome. I have to say I love using this. The sheet is A4 with two the same on it. Personalised messages available (as always)

30 questions with 30 answers students match the questions and the answer to decode a message. Students can self-check using the message. This is quite challenging! Personalised messages on request! In response to review I have added a second file. No repeat answers, although I quite like the idea that they have to decide which one to use to make the message read correctly...In real life we can have the same answer! Also changed the message for variety. Thanks

30 sequences with 30 nth terms. Match them up to reveal the message. Self checking because if the message doesn't make sense then they must be wrong. The easier sheet has all positives the harder sheet has descending sequences too! Message sets another task....the answer to which is....at the end of the worksheet name! Personalised messages by request.

Students find the correct term of the sequence to decode a message. Encourage them to write (and use) the nth term. Self checking....If they can read the message it is correct! Also helps spot errors. Personalised messages available by request!

Match the properties to decode the message...If students can read it, they got it right. Two of four properties to match for each regular polygon... Name (I used http://www.math.com/tables/geometry/polygons.htm) / Interior Angle / Exterior Angle / Sum of (interior) Angles. I think it is quite challenging. Comments welcome Personalised messages by request.

30 questions. match the mid point to the two given points to decode the message. Students can find shortcuts...but not for many! Personalised messages available by request! Comments welcome.

Solve the inequalities to decode the message. If they can read the message they must have got it correct or cheated! Challenging sheet. If they multiply or divide by a negative they will need to "interpret" the answer. My advice is to avoid this by "doing the same to both sides" using addition/subtraction instead. Personalised messages by request. Comments welcome. This one was a bit awkward to do!

30 questions with 30 answers. Match the question to the answer to decode the message. Self Checking for students! Easy sheet has simpler percentages. Should be accessible without a calculator. Harder one can be completed using estimation by more able students...otherwise more work! Personalised messages available by request.

30 questions on expanding double brackets to form a quadratic, Can be used in reverse to practise factorising. Students will know they have got it correct when they decode the message. Personalised messages available by request!

30 questions with 30 answers. Students match the questions to the answer to decode the message. Students can check their accuracy using the message! Personalised messages by request.

Sharing amounts of money and questions about who gets what or how much more. The variety of questions means that students have to think rather than just follow the same routine. You can tell if students are getting it correct as the message appears (or that they need help if the message looks like garbage!) Message is asking them if they can explain methods for the different type of questions. Bespoke messages by request…e-mail.

30 Questions on equations of motion. 30 answers too. Match the question to the answer in order to decode the message. Bespoke messages by request.

30 cuboids. Match the dimensions of the cuboid with its Surface Are and Volume to decode a message. Students can check their accuracy against how intelligible the message is! Personalised messages available (or design your own!) I have amended the sheet...no more duplicates. Sorry for any inconvenience!

30 questions with 30 answers students match the questions and the answer to decode a message. Questions involve a mixture of "percentage off" and "percentage of"...can cause errors if not careful. Students can check their accuracy with their ability (or not) to read the message! Personalised messages on request!

Given 30 cities and their country. match them with the correct Latitude and LOngitude to decode the message. If the message makes sense you are getting it correct. I have included a world map. I am not a great Geographer and I can do this (without the internet!) but it is quite challenging. I produced this for a Geography teacher but do quite like it. Bespoke messages by request. Message starts.: “IF YOU CAN”

30 questions and 30 answers. Students match the question to the answer in order to decode the message. The teacher can see how well they are doing by looking at whether the message makes sense. Message suggests that this could be done without a calculator! Bespoke messages by request.