Get more inspiration delivered to your inbox!

Addition Strategies | Are Your Students On the Case? (Exciting NEW Resource)

Hero image
Photo of Holly (Teach Starter)
Updated | 2 min read

Are you looking for a super fun and exciting way to cover addition strategies with your students?

Imagine turning your classroom into a detective studio where your students become addition detectives! With their very own ‘suspect’ wall, your students will absolutely love going through this maths style investigation. They will be challenged to use different addition strategies to uncover suspects in a VERY suspicious case.

boy dressed as a detective

Using Mental Addition Strategies to Solve the Case

Our brand new teaching resource, the Addition Detectives PowerPoint consists of 43-slides of goodness. Styled as a detective story – your students will be captivated by the first slide!

Use this PowerPoint to guide your students through the mini-investigations. Alternatively, pair it with our Addition Detectives Unit – with matching lesson plans aligned to each investigation!


The Brief for Your Addition Detectives

A bank has been broken into, and a vast sum of money has been stolen! It is up to your students to use their mental addition strategies to reveal the suspects and solve the crime.

Each clue requires a different addition strategy that students need to use to reveal the suspect!

Addition strategies include:

  • Concrete Materials
  • Bridging to Ten
  • Jump Strategy
  • Number Boards
  • Split Strategy
  • Linking Addition and Subtraction
  • Compensation Strategy

As well as this amazing teaching Powerpoint, an adorable Suspect Board is available to download on our website. It is the perfect addition in your classroom to create a suspect wall for your very own ‘detective office’.

Explain to your students that this is where they will put the pictures of the suspects they uncover.

Suspect board for addition detectives for kids resource

Who did it? My pick is Isabel Underwood!!

Has this left you wanting more?

This PowerPoint and suspect board is actually part of a larger addition unit plan that consists of 8 sequential lessons, plus an assessment piece at the end!

Here are just some of the addition strategies resources that are used within this unit plan:

Image of Number Talks - Double Digit Addition Task Cards

teaching resource

Number Talks - Double Digit Addition Task Cards

Build number sense skills with this set of 24 task cards.

Teach Starter Publishing24 pagesYears: 2 - 3
Image of Rainbow Numbers Worksheet

teaching resource

Rainbow Numbers Worksheet

A worksheet using rainbow numbers.

Teach Starter Publishing1 pageYears: F - 3
Image of Colourful Tens Frames

teaching resource

Colourful Tens Frames

A colourful set of tens frame templates.

Teach Starter Publishing4 pagesYears: F - 3
Image of Jump Strategy Addition Game

teaching resource

Jump Strategy Addition Game

A fun and challenging game that uses the jump strategy to solve addition problems.

Teach Starter Publishing6 pagesYear: 3

Suspects for addtion detectives unit plan for kids

Image of Hundreds Board Mystery Picture Addition Task Cards

teaching resource

Hundreds Board Mystery Picture Addition Task Cards

A set of 32 activity task cards that require students to complete addition problems and colour in a hundreds chart to reveal a mystery picture.

Teach Starter Publishing22 pagesYears: 1 - 6
Image of Fact Family Rocket Blast Off (Middle)

teaching resource

Fact Family Rocket Blast Off (Middle)

16 cards and a rocket game mat designed to demonstrate an understanding of addition and subtraction fact families.

Teach Starter Publishing2 pagesYears: 2 - 4
Image of Addition Strategies Worksheet

teaching resource

Addition Strategies Worksheet

A worksheet to use when consolidating multiple addition strategies.

Teach Starter Publishing2 pagesYears: 2 - 3
Image of Split Strategy Addition Dominoes

teaching resource

Split Strategy Addition Dominoes

A set of addition dominoes to use in the classroom when applying the split strategy.

Teach Starter Publishing3 pagesYears: 2 - 3

This unit has been created specifically for Year 3 – the PowerPoint and resources can easily be adapted to suit the needs of younger or older students!

For ideas on how to teach subtraction strategies to your kids – check out our blog – Subtraction Strategies | A Guide for Teaching Subtraction (Early Years).

We’d love to know how your very own addition detectives go!


Login to comment

Popular blogs right now!

Get more inspiration
delivered to your inbox!

Receive the Teach Starter newsletter full of tips, news
and resources with your free membership.

Sign Up