Teaching Resource

Addition Detectives PowerPoint

PowerPoint | 43 pages|Grade: 3

An engaging 43-slide PowerPoint styled as a detective story in which students are tasked with using different addition strategies to uncover suspects.

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.

This PowerPoint includes seven ‘investigations’, each focusing on a different addition strategy. The investigations include an example of the strategy, a question, an answer and a suspect that is revealed. The story concludes with a final set of questions that reveal the innocent suspects and identify the criminal.

Use this teaching presentation as a consolidation task across multiple lessons to build excitement in the classroom, or solve the crime in one session as a whole-class activity.

This presentation is best paired with the Addition Detectives Unit, which has lessons aligned to each investigation.

Addition strategies include:

  • concrete materials
  • bridging to ten
  • jump strategy
  • number boards
  • split strategy
  • linking addition and subtraction
  • compensation strategy.

To explore addition strategies in greater detail, take a look at the following teaching resources:


Take a look at the following segment from our Gamified Learning Using Interactive PowerPoints webinar. Resource Producer Tom will step through how to use this PowerPoint with your class.

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Download this resource as part of a larger resource pack or Unit Plan.

      Australian Curriculum alignment

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    Comments & Reviews

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    Gaynor Smith

    I love this! I am a bit confused as there are two Suspect 4’s but only one with an identity. Have I missed something??

    Gaynor Smith · Jul 12th, 2020

    Tom (Teach Starter)

    Hi Gaynor,

    Great to hear that you are enjoying the Addition Detectives PowerPoint!
    There should only be one Suspect 4 section. It focuses on using a hundreds chart when adding numbers.
    I have checked the current download and it is all correct. I’d suggest re-downloading the resource.
    If you wish, send an email to [email protected] and we will be more than happy to help you figure out what is happening with Suspect 4!

    Tom (Teach Starter) · Jul 13th, 2020

    Lilian

    Great

    Lilian · Oct 20th, 2019

    Tom (Teach Starter)

    Hi Lilian,
    I’m glad you like the Addition Detectives PowerPoint. All the best to you and your students solving the mystery!

    Tom (Teach Starter) · Oct 21st, 2019

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