**On 20 and 22 April 2021, we hosted NRICH Live events for Primary and Secondary teachers respectively. During the events, we worked on some problems from the latest features, and considered the valuable mathematical thinking that the problems might prompt in classrooms.**

**Recordings of both events are below.**

The event for teachers of **5-11 year olds** focused on problems from the Exploring Factors and Multiples Feature.

Here is a PDF of the PowerPoint slides we used (there were only two!).

Here is a recording of this webinar:

The event for teachers of **11-17 year olds** focused on problems from the Properties of Numbers and Modular Arithmetic features.

Here is a PDF of the PowerPoint slides we used (there were only two!).

Here is a recording of this webinar: