Count each one once. In a ten frame, a full frame is 10. Count on from 10 for the rest.
Worked example
How many are there? Touch each one once as you count.
Answer:8
Touch each one once and say a number for it. The last number you say is how many: 8. Answer: 8.
For grown-ups: Count up to 20 arranged objects or 10 scattered; count out a given number. Below: three problems to try with the worked answers, and a free printable sheet. Children can practise the same skill as a game, with no sign-up and no ads.
CCSS K.CC.B.5
What this practises, for teachers
Practices count up to 20 arranged objects or 10 scattered; count out a given number (K.CC.B.5). A printable sheet with its answer key, worked answers on the page, no accounts.