Posy's Egg Cartons — Count by Tens to 100 (Kindergarten)

About this activity

Posy the hen packs her eggs into cartons that each hold exactly ten, and the child counts a few full cartons by tens — 10, 20, 30… — to tap the total number of eggs. It's a free, interactive Kindergarten counting activity that plays right in the browser with no sign-up and nothing to install.

Each carton is drawn as a lidded box with ten eggs in two rows of five and a '10' tag, so a child can see that one carton stands for a group of ten, not one. That is the big idea: counting the fast way, by tens, instead of one egg at a time. The answer choices are chosen to catch the two common slips — counting the cartons by ones (so 4 cartons looks like '4') and going one ten too far — so the child has to count the groups of ten correctly.

It is aligned to Common Core K.CC.A.1 — counting to 100 by tens. No timer, no score — just calm, playful practice.

What's inside this activity

• Designed for Grade K learners (ages about 5–6)
• Common Core strand: Counting & Cardinality
• Aligned to Common Core standard K.CC.A.1

How to play

Look at Posy's full cartons, each holding ten eggs.

Count them by tens — 10, 20, 30 — and tap the total number of eggs.

A warm check confirms a correct count and offers an easy retry, with no timer and no score.

What your child practices

• Counting groups of ten by tens — 10, 20, 30 — instead of by ones
• Understanding that one full carton stands for ten eggs
• Choosing the right total and avoiding the count-by-ones slip
• Building the rote ten-counting sequence up toward 100

Learning goals

Count to 100 by tens — the focus of Common Core K.CC.A.1

Understand that counting equal groups of ten is faster than counting by ones

Build the place-value foundation that tens-and-ones work later depends on