### Teaching and Group Activities for Understanding

**Day 1 Teaching**Count reliably up to 20 objects and write the numbers in numerals.

**Group Activities**

-- Making cube snakes and re-ordering muddled numbers on a number line.

**Day 2 Teaching**Place numbers up to 20 on a washing line or a bead bar using the landmarks of 5, 10, 15, 20.

**Group Activities**

-- Estimate the length of Plasticine worms and measure against bead strings.

**Day 3 Teaching**Recognise and estimate numbers more and less than 20, making sensible guesses within a range (e.g. more than 5, less than 5, etc.)

**Group Activities**

Use the in-depth problem-solving investigation 'Count the Crayon' from NRICH as today's group activity.

Or, use these activities:

-- Estimate objects in pots then arrange and count.