Math · Stage 1
Solve one-step word problems within 100 with a bar model
Draw one bar, split it into parts, and read the answer: whole = part + part.
✦ Math📘 Stage 1 · S1⏱ ~9 min🧒 Ages 5–6★ Free to start
I can solve one-step word problems within 100 by drawing a bar to show the whole and its parts.
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Kavi's Picture Bar 📊
Kavi has a word problem: 30 red apples 🍎 and 20 green apples 🍏 — how many in all? Instead of counting one by one, Kavi draws one long bar and splits it into two parts: 30 and 20. "The two parts together make the whole," hoots Kavi. "My bar shows the whole story — 30 + 20 = 50 apples!"
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What your child will learn
1Two parts, one wholeA bar model shows a whole cut into parts. Here are 10 counters. Tap Add 1 and watch the filled part and the empty part — together they always make the whole, 10.
2The bar: whole and partsA bar model puts the whole on top and the two parts below. Tap ◀ less and more ▶ to slide the split — the two parts always add back to the whole, 10.
3Every way to make the wholeHere is every way to split 10 into two parts. When you draw a bar for a problem, you are choosing one of these splits. Run your finger down the list.
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A peek inside
Kavi counts 30 red apples 🍎 and 20 green apples 🍏 in the basket. How many apples in all?
Bar: part 30 + part 20 = whole ▢ → 30 + 20
Try this at home: Draw a bar: 20 ducks 🦆 and 30 ducks 🦆 meet at the pond. How many in all? __
Ready to play and learn?
Start the free interactive lesson, or print the handout for screen-free play.
Part of Math · Stage 1 · S1 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.