Preschool · Math · week 21

First little add: 2 and 1 more

Introduce simple addition as combining a small group with 1 more object and counting the new total.

Adding means putting groups together and counting them all as one big group.

If you have 2 crackers and get 1 more, you can count them all together to find out how many that is now.

📋 For the teacher
Teach it (10–15 min):
  • Use real objects every time - "adding 1 more" should be something your child can see and touch, not an abstract idea yet.
  • After adding, always recount the whole group together from one, rather than just adding on in their head.
  • Keep both starting numbers small (1 to 4) so the total never goes past 5 this week.
  • Say "and one more" often - that phrase is the heart of this week idea.
Talk about it:
  • If you have 2 toys and get 1 more, how many do you have?
  • How did counting help you find the new total?
  • Can you show me 3 and 1 more with your fingers?

Mastery looks like: Child combines a small group with 1 more object and correctly counts the new total by recounting the whole group.

Common stumbles: Child forgets to include the original group and only counts the new object, or forgets to recount from the start.

See it visually

Interactive, spoken-aloud tools that show this idea in motion.

AdditionSee groups combine — with counters, blocks, and the number line.try →Counting & Ten-FramesCount objects in ten-frames and base-ten blocks, one tap at a time.try →
Homework for this lessonType it, write it with a stylus, or print it for pencil & paper.open →
Records attendance + 15 min of Math for this learner.
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