teaching resource

# Mini-Mystery – Which Key Opens the Door?

• Updated:  06 Jun 2023

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

• Non-Editable:  PDF

• Pages:  1 Page

• Years:  4 - 5

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teaching resource

# Mini-Mystery – Which Key Opens the Door?

• Updated:  06 Jun 2023

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

• Non-Editable:  PDF

• Pages:  1 Page

• Years:  4 - 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 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:

• Maths rotation activity
• Post-lesson exit ticket
• Homework assignment
• Whole-class review (via smartboard)

Not only does this mini-mystery activity help your students with their memory and logical thinking, but it also allows learners 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.

## Don’t Stop There

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

[resource:1683486]   [resource:213539]   [resource:97203]

Write a review to help other teachers and parents like yourself. If you'd like to request a change to this resource, or report an error, select the corresponding tab above.

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My year 5 kids LOVED these activities! Any chance of some more?? Thanks so much TeachStarter

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Hi Alana, Thanks for your feedback! Please feel free to request a resource at our 'Request a Resource' page. https://www.teachstarter.com/request-a-resource/ Requests are voted on by the Teach Starter community and we create the top requests. Please let me know if you have any further questions, I’m more than happy to help.

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that is so cool

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Hi Zoe, Thanks for your comment! We're glad you like the mini-mystery!