Truth Tiles 2Task 17 ... Years 2  10SummaryYou have five consecutive numbers from 3 to 7. The problem is to use just these to make the following equation true.
This cameo has a From The Classroom section in the form of a video of two students explaining their solutions and showing their journal work at the end of their first ever lesson using tasks. 
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IcebergA task is the tip of a learning iceberg. There is always more to a task than is recorded on the card. 
One part of the iceberg is clearly:

Note: This investigation has been included in Maths At Home. In this form it has fresh context and purpose and, in some cases, additional resources. Maths At Home activity plans encourage independent investigation through guided 'homework', or, for the teacher, can be an outline of a class investigation.
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 For this specific activity click the Learners link and on that page use Ctrl F (Cmd F on Mac) to search the task name.
Whole Class InvestigationTasks are an invitation for two students to work like a mathematician. Tasks can also be modified to become whole class investigations which model how a mathematician works. 
To convert this task into a whole class lesson each pair of students needs to tear a piece of paper into eight parts. Digits 3 to 7 are written on 5 of them and the +,  and = are written on the others. I like the task because it is so openended. All my students can find some solutions and achieve a level of success, but the option of finding all the solutions, or adding tiles 8, 9, 10..., increases the depth of the task significantly and can challenge my very capable students.For more ideas and discussion about this investigation, open a new browser tab (or page) and visit Maths300 Lesson 168, Truth Tiles 2, which includes an Investigation Guide and software. 
Is it in Maths With Attitude?Maths With Attitude is a set of handson learning kits available from Years 310 which structure the use of tasks and whole class investigations into a week by week planner. 
The Truth Tiles 2 task is an integral part of:
