10 ready-to-teach Year 1 maths lessons on addition and subtraction within 20, each with a teaching slide deck and worksheets at three levels. The lessons follow the White Rose Maths small-steps order for Year 1 (Spring Block 2), so they slot straight into White Rose or another mastery scheme.

WHAT’S INSIDE (10 slide decks + 44 printable pages)
• 10 teaching slide decks (PowerPoint, opens in Google Slides) – learning goal, key words, a warm-up, modelled examples, show-me questions with answer slides, reasoning, a spot-the-mistake slide, an exit ticket, a game and a review
• Teacher notes on every slide
• Worksheets for every lesson at three levels (★ support, ★★ core, ★★★ challenge), with answers
• An end-of-block check (12 questions) with answers and a class tracker

THE 10 LESSONS

1. Add by counting on
2. Add ones using number bonds
3. Number bonds to 20
4. Doubles
5. Near doubles
6. Subtract ones using number bonds
7. Subtract by counting back
8. Find the difference
9. Related facts (fact families)
10. Missing number problems

HOW IT’S TAUGHT
Concrete, pictorial and abstract, with ten frames, base 10, part-whole models, bar models and number lines throughout, in a mastery approach.

FORMATS
PowerPoint slides and A4 PDF worksheets, one folder per lesson (in one ZIP).

GREAT FOR
Whole-class teaching, small groups and intervention, supply and cover lessons, and homeschool.

ALSO AVAILABLE
• Year 1 Place Value within 20 – the block before (Spring Block 1), in the same format
• A of this block, with Chinese slides, pinyin and parent guides
• Year 1 Addition and Subtraction Challenge Cards – 24 word problems within 20
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This resource follows the small steps of the White Rose Maths Year 1 scheme of learning (version 3). Allen Learning Press is not affiliated with, or endorsed by, White Rose Education. All questions and pictures are original.

Licence: for use by one teacher in one classroom. Please buy additional licences to share with colleagues.