For an Introduction to Bar Modelling have a look at the **NCETM Secondary Professional Development Materials** Choose the section on **Using mathematical representations at KS3** for 10 different guidance documents including Bar Models. This 17-page document for professional development provides a very comprehensive introduction to Bar Modelling and includes example problems.

The section on Further Resources in the NCETM guidance document includes Thinking Blocks, an outstanding resource that I included in a recent post on **Ratio and Proportion**. The relevant information on using the resource is included for completeness in this post. Further resources for Bar Modelling are also given.

**Thinking Blocks** from **Colleen King’s **site **Math PlayGround** – is a wonderful way to visualize **Ratio and Proportion problems**. This works on all devices.

Models like this really help students to visualise problems. Note the **numerous videos** showing how to model problems (scroll down the page). You can use the **Thinking Blocks Tool** to model your own problems; watching the videos will help you learn to use the tool. There is a very clear help section also.

I have used the tool here to model a problem from Andy Lutwyche’s **Clumsy Clive on Ratio** resource.

Also featured in NCETM’s resource section is **The Mathenæum** from **Ken Wessen** which includes **Modelling Word Problems **and **Fractions, Decimals and Percentages**.

See also:

Sybilla Beckmann’s paper, **Solving Algebra and Other Story Problems with Simple Diagrams: a Method Demonstrated in Grade 4–6 Texts Used in Singapore** is an interesting read on the subject of the use of diagrams.

- Note
**this post**on**PixiMaths**. Many PixiMaths lessons demonstrate examples using the bar model - An introductory worksheet from the excellent
**Mathspad**site**here** - From Future Learn,
**Presenting the Bar Model Method**. Dr Bokhove presents a short introduction to the bar model and shows two concrete examples: one for the part-part-whole model and the other for the comparison model. - For younger children, from Third Space Learning,
**How to Teach the Bar Model in Maths KS1 & KS2 To Ace Arithmetic and Multi Step Word Problems** **Mathsbot Manipulatives**–**Bar Modelling**.