For teachers

Presentation decks

5 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.

30 slides 12 embedded videos 30 interactive tools 58 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 4.1

Ordering decimals

Compare and order decimal numbers.

6 slides3 videos 6 interactive11 quick checks
Section 4.2

Adding and subtracting decimals

Add and subtract decimals, mentally and with a written method.

6 slides3 videos 6 interactive12 quick checks
Section 4.3

Multiplying decimals

Multiply decimals by whole numbers, and by other decimals.

6 slides2 videos 6 interactive12 quick checks
Section 4.4

Dividing decimals

Divide decimals by whole numbers, rounding the answer to a given degree of accuracy where necessary.

6 slides2 videos 6 interactive12 quick checks
Section 4.5

Making decimal calculations easier

Simplify calculations containing decimals using place value, equivalent fractions and the order of operations.

6 slides2 videos 6 interactive11 quick checks

At a glance

SectionSlidesVideosTools Checks
4.1 Ordering decimals6 3 6 11 Open ↗
4.2 Adding and subtracting decimals6 3 6 12 Open ↗
4.3 Multiplying decimals6 2 6 12 Open ↗
4.4 Dividing decimals6 2 6 12 Open ↗
4.5 Making decimal calculations easier6 2 6 11 Open ↗