Short Blocks

Maths Year 1 Spring Addition and Subtraction

Each unit has everything you need to teach a set of related skills and concepts.

Number bonds to 8 and 9; doubles (suggested as 3 days)

Planning and Activities

Day 1 Teaching
Write the number sentence 3 + ☐ = 8. Children discuss. Did they count on or use their fingers? Hold up a strip of 8 cubes and beneath it a strip of 3 cubes. How many more cubes to make 8? Fill in the number sentence 3 + 5 = 8. Repeat for other bonds to 8. Record the bonds to 8. Choose an addition; cover one number, ask children to find it.
Group Activities
-- Find the matching number to make 8.
-- Order number bonds to 8; find matching number bond partners.

Day 2 Teaching
Write 9 + 0, 3 + 6, 7 + 2, 4 + 5, 8 + 1 and show that these are all bonds to 9. Can we write them differently? Show that we can write addition either way round. 3 + 6 = 9 and 6 + 3 = 9. Rehearse using these bonds to write subtraction facts, e.g. 9 – 4 = 5.
Group Activities
-- Making number bonds to 9 with cubes in a feely bag.
-- Play a game creating number bond number sentences with a partner.

Day 3 Teaching
What is double 3? Explain that when we double a number we actually add it to itself, e.g. 4+4, 6+6 etc. Ask children to work in pairs to show doubles to 6 on their fingers.
Draw a 3 by 2 grid on IWB. Fill with numbers 1 to 6. Children copy and write doubles.
Group Activities
Use the investigation suggestions in ‘Double Trouble’ from NRICH for today’s group activity.
Or, use these activities:
-- Fish for doubles, collecting as many fish as they can.
-- Quick-fire game of doubles and halves.

You Will Need

  • Cubes and Post-it notes
  • ‘How many more to make 8’ cube bar model (see resources)
  • Number cards 0–8 and pieces of card
  • Mini-whiteboards and pens
  • Flipchart
  • Feely bag
  • Number cards 0–9 and counters
  • IWB
  • ‘Fish’ templates (see resources)
  • Box and beanbag

Worksheets

Day 1
Draw missing cubes to work out number bonds to 8.

Day 2
Work out how many more candles each cake would need to have 9 candles in total.
Make 9 with cubes and write number sentences, including subtraction.

Day 3
Work out fish doubles and fill in the number sentences.

Mastery: Reasoning and Problem-Solving

  • Point at the first number and count on.
    5 + ☐ = 9
    6 + ☐ = 8
    ☐ + 6 = 9
    3 + ☐ = 8
    ☐ + 2 = 9
    1 + ☐ = 8
  • 9 frogs in the pond.
    3 hop out.
    How many now?
  • 8 beetles on a leaf.
    5 fly away.
    How many now?
  • Double 5 is ☐.
    Double ☐ is 8.
    Double 3 is ☐.
  • What do you have to do when you double?
    How do you know a number is a double?


In-depth Investigation: Double Trouble
Children create matching amounts and spot things which are the same. Double Trouble from nrich.maths.org.