**Making Great Links In A Topic**

What makes a great link between concepts within a topic? Consider three concepts, A, B and C, where for example:

A = Multiplying single digit integers. For example: 2 × 3 = ?

B = Multiplying double digit integers. For example: 11 × 13 = ?

C = Multiplying triple digit integers. For example: 210 × 103 = ?

A good link between concepts would satisfy the following:

- If the student is successful on (B), it proves that they would be successful on (A);

- If the student is unsuccessful on (B), it proves that they will be unsuccessful on (C).

If both conditions are met, then a pre-requisite linking is appropriate:

**Pre-Requisite Links Between Topics**

During the Concept-Linking step you are encouraged to consider linking concepts *within* and *outside* the topic. For example:

Notice that a Pre-requisite link exists between two concepts in completely different Strands:

Strand: Statistics and Probability > Topic: Presenting and Analysing Data > Concept: Pie Charts

Strand: Geometry and Trigonometry > Topic: Synthetic Geometry > Concept: Angles.

*Why?*

> If a student is successful in an assessment on Pie Charts we have good evidence that they would be successful on Angles, because you need to understand Angles to be able to read and present data in a Pie Chart format. This is a good *backward *link.

> If a student is unsuccessful in an assessment on Angles we have good evidence that they would be unsuccessful on Pie Charts, because if you fail an assessment on Angles you are missing one of the key skills needed to read data when it’s presented in a Pie Chart. This is a good *forward *link

**Multiple Pre-Requisite Links**

It is possible that a single concept can have multiple links. Consider the example from above, Pie Charts. The final map proposed by the SME actually contains three pre-requisite links for Pie Charts, two of which are in different strands/topics:

**Rules**

Behind the best practices outlined above there are some rules that must be followed for the curriculum map to function. These are:

- A concept cannot be a *pre-requisite* of itself. This would create a recommendation loop.

- Every concept must be linked to at least on other concept. Failure to do this will create *orphan* concepts which will never be recommended to users.

- If your product contains additional concepts for students on a *higher* curriculum, these concepts cannot be *pre-requisites* for *ordinary* curriculum concepts.

- If different concepts have different 'Recommended Years of Study' it is important that a concept for Year 4 students is a Pre-Requisite for a concept appropriate to Year 3 students.

> These are important principles of Curriculum Linking. If you have any questions or concerns, please contact your Project Lead at Adaptemy to arrange a session.