# What’s new? November 2021

2019-20: Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug

2020-21: Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug

2021-22: Sep | Oct

#### GeoGebra applets

##### Multi-base zooming number line

This applet has been added here. As its name suggests, the applet can be used to zoom in and out of a number line to get a sense of where a number lies. Additionally, you can choose number lines in different bases, from base 2 to base 16. Working in different bases is an excellent way to get students thinking hard about place value.

##### Solving equations with dynamic algebra tiles

Versions of this applet have been added at here and here. Each side of the equation is represented using algebra tiles, but the variable we’re solving for, $$x$$, is shown using resizable tiles. By dragging up the slider, we can illustrate that the expressions are only equal for a particular value of $$x$$—this is the value that satisfies the equation i.e. its solution.

#### Desmos classroom activities

We have continued to add Desmos classroom activities to our Resources. These Desmos activities contain randomised questions which means that for any given tasks, students in general will get similar, but not identical, questions to each other. As a teacher, you can quickly see the type of questions that students are seeing, but you can also dig deeper to see the specific question that each student sees. The video below shows the mobile phone screen of a student working through a task (on the right) and the teacher’s dashboard view (on the left). Whilst teachers can monitor students’ progress on a question-by-question basis during a live lesson, you don’t have to do this in real time. You can simply check how students fared at a later time, if you wish. This makes these activities suitable for use as homework tasks.

Where available, you will find links to these Desmos classroom activities in the expandable Teacher resources boxes under a topic’s set of slides.

#### Delta exercises

We have continued to add Delta exercises to a few topics, to follow on from the Alpha, Beta and Gamma exercises.