For teachers

Presentation decks

6 standalone teaching decks, one per section. Each is a single HTML file with the slides, the videos, the interactive tools, the check questions and the speaker notes already inside it — email it, put it on a USB stick, or open it straight from a projector laptop. Nothing to install.

36 slides 12 embedded videos 36 interactive tools 72 quick checks Dark or light theme

How the decks work

Reveal in stepsPress or Space and the bullet points appear one at a time, then the worked example. Nothing is on screen before you want it there.
Video built inThe lesson video that matches each slide sits in the side panel — no switching tabs mid-lesson. (This is the only part that needs the internet.)
Interactive toolA live model for the idea on that slide: a jumping number line, a sign-rule table, a 100-grid that highlights multiples, a factor comparer, a divisibility checker that explains every test, a powers explorer and a square-root estimator.
Quick checksOne or two questions per slide, drawn from the same verified bank as the practice pages. Type an answer and it marks instantly, or press Reveal for the full method.
Speaker notesPress N. Each slide has notes on what to model, the misconception to watch for, and a suggested time.
Discussion promptEvery slide has a question to put to the class, in the Discuss tab.
Presenter controlsO overview · T lesson timer · D dark/light · F full screen · 19 jump · ? shortcuts. Works with a presenter remote.

The decks

Section 15.1

Perimeter and area of rectangles

Find the perimeter and area of rectangles and squares, work backwards from a given area or perimeter, and understand what congruent means.

6 slides2 videos 6 interactive12 quick checks
Section 15.2

Compound shapes

Find the area and perimeter of shapes made from rectangles, by splitting them up or by subtracting from an enclosing rectangle.

6 slides2 videos 6 interactive12 quick checks
Section 15.3

Units of area

Understand the relationships between mm², cm², m², hectares and km², and convert between them.

6 slides2 videos 6 interactive12 quick checks
Section 15.4

Area of a triangle

Derive and use the formula for the area of a triangle, and use it in compound shapes.

6 slides2 videos 6 interactive12 quick checks
Section 15.5

Volume of cubes and cuboids

Derive and use the formula for the volume of a cube or cuboid, and use it for compound solids made from cuboids.

6 slides2 videos 6 interactive12 quick checks
Section 15.6

Surface area, nets and views

Use knowledge of area to calculate the surface area of cubes and cuboids, work with their nets, and represent the front, side and top views of a 3D shape.

6 slides2 videos 6 interactive12 quick checks

At a glance

SectionSlidesVideosTools Checks
15.1 Perimeter and area of rectangles6 2 6 12 Open ↗
15.2 Compound shapes6 2 6 12 Open ↗
15.3 Units of area6 2 6 12 Open ↗
15.4 Area of a triangle6 2 6 12 Open ↗
15.5 Volume of cubes and cuboids6 2 6 12 Open ↗
15.6 Surface area, nets and views6 2 6 12 Open ↗