teaching resource

# Mini-Mystery – Which Key Opens the Door?

• Updated:  29 Oct 2021

Use knowledge of 2-D shapes and right angles to solve the mystery in this fun, logic-based activity.

• Non-Editable:  PDF

• Pages:  2 Pages

• Years:  2 - 5

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teaching resource

# Mini-Mystery – Which Key Opens the Door?

• Updated:  29 Oct 2021

Use knowledge of 2-D shapes and right angles to solve the mystery in this fun, logic-based activity.

• Non-Editable:  PDF

• Pages:  2 Pages

• Years:  2 - 5

Use knowledge of 2-D shapes and right angles to solve the mystery in this fun, logic-based activity.

Can we trust those triangles?!

In this engaging maths activity, students review 2D shapes and right angles to find the correct key.

Read the statements made by the characters and use logic and reasoning to eliminate ‘red herring’ characters who are trying to trick you! By combining the statements made by the characters with the Cold Hard Facts at the bottom of the page, students then decide which key opens the door.

## Right Angles and 2D Shapes Worksheet: Scaffolding and Extension Tips

This teaching resource can be an engaging maths warm-up exercise, a fast finishers task, or even a fun indoor break activity.

Students must use their knowledge of 2D shapes and right angles to help solve the mystery.

In addition to individual student work time, use this 2D shapes worksheet as a:

Not only does this mini-mystery activity help your students with their memory and logical thinking, but it also provides learners with an opportunity to read between the lines.

In addition to solving the worksheet, students can also colour it.

## A Variety of Ways to Prepare This Resource

Because this resource includes an answer sheet, we recommend you print one copy of the entire file. Then, make photocopies of the blank worksheet for students to complete.

You can also turn this teaching resource into a sustainable activity! Print a few copies on cardstock and slip them into dry-erase sleeves. Students can record their answers with a dry-erase marker, then erase and reuse.

Additionally, project the worksheet onto a screen and work through it as a class.

Get more handy worksheets here!

## Don’t Stop There

We’ve got more 2-D Shapes Teaching Resources to cut down on lesson planning time:

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#### 2D Shape Bingo

30 different bingo cards using 2D shape pictures and names.

18 pagesYears: 1 - 7

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#### Let's Sort It! - 2D Shapes and 3D Objects Sorting Activity

A sorting game to use in the classroom when identifying the properties of 2D shapes and 3D objects.

9 pagesYears: 1 - 2

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#### Tangram Treats - Task Cards and Templates

Explore the properties of geometric shapes with this set of scaffolded tangram patterns task cards and cut-out tangram templates.

37 pagesYears: 2 - 6