Subtract Within 5 — Mathematics lesson, Kindergarten

Kindergarten MathChildren count to 20, compare groups and numbers, add and take away within 10, split numbers into parts, build the teen numbers from tens and ones, and explore shapes, measuring and sorting. Every lesson follows the same rhythm: watch, try it with help, then solve new problems on your own.Lessons in this course

Meet the Number Detectives — Lesson 1 · Free preview. Meet Pip, learn how detectives count, and crack the first cases.

Counting One by One — Lesson 2 · Included in the full course. Count every object exactly once, even when they are all mixed up.

Numbers 0 to 5 — Lesson 3 · Included in the full course. Read the numbers 0 to 5, including zero, the number for nothing at all.

Numbers 6 to 10 — Lesson 4 · Included in the full course. Count and read 6 to 10, and see them as five and some more.

Counting to 20 — Lesson 5 · Included in the full course. Say the numbers to 20, and keep counting from any number.

Numbers 11 to 15 — Lesson 6 · Included in the full course. Count and read 11 to 15: a full ten and a few more.

Numbers 16 to 20 — Lesson 7 · Included in the full course. Count and read 16 to 20, all the way to two full tens.

Counting in Different Arrangements — Lesson 8 · Included in the full course. In a line, in rows or in a jumble, the number stays the same.

Count and Find — Lesson 9 · Included in the full course. Count out exactly the number asked for, up to 20.

More or Fewer? — Lesson 10 · Included in the full course. Compare two groups and tell which has more and which has fewer.

Equal Groups — Lesson 11 · Included in the full course. Find groups with the same number, even when they look different.

Which Number Is Greater? — Lesson 12 · Included in the full course. Compare two written numbers from 1 to 10.

Put Numbers in Order — Lesson 13 · Included in the full course. Line up numbers from least to greatest.

Two Groups Become One — Lesson 14 · Included in the full course. Push two groups together and count how many there are altogether.

Add One More — Lesson 15 · Included in the full course. Adding one more always makes the next number.

Addition Within 5 — Lesson 16 · Included in the full course. Every way to add up to 5, including adding zero.

Addition Within 10 — Lesson 17 · Included in the full course. Add bigger groups, with totals up to 10.

Solve the Story Problem — Lesson 18 · Included in the full course. Turn little stories into addition and solve them.

Some Go Away — Lesson 19 · Included in the full course. Send some away, then count how many are left.

Subtract Within 5 — Lesson 20 · Included in the full course. Take away from groups of up to 5, quickly and surely.

Subtract Within 10 — Lesson 21 · Included in the full course. Take away from bigger groups, up to 10.

Addition and Subtraction Stories — Lesson 22 · Included in the full course. Decide whether a story puts together or takes away, then solve it.

One Number, Two Parts — Lesson 23 · Included in the full course. Split a group into two parts and see the number bond.

Different Ways to Make Five — Lesson 24 · Included in the full course. Find every pair of numbers that makes 5.

Different Ways to Make Ten — Lesson 25 · Included in the full course. Find pairs that make 10, using the ten-frame.

The Missing Part — Lesson 26 · Included in the full course. Find the hidden part with ten-frames, counters and number bonds.

Ten Makes a Bundle — Lesson 27 · Included in the full course. Ten ones fill a frame and make one ten.

Ten and Some More — Lesson 28 · Included in the full course. Every teen number is a full ten and some ones.

Build a Number — Lesson 29 · Included in the full course. Ten ones become one ten — and you get to watch it happen.

Shape Detectives — Lesson 30 · Included in the full course. Meet circles, triangles, squares and rectangles, and how to tell them apart.

Shapes All Around Us — Lesson 31 · Included in the full course. Spot shapes in everyday things, big or small, turned any way.

Build with Shapes — Lesson 32 · Included in the full course. Put shapes together to make new shapes and pictures.

Solid Shapes — Lesson 33 · Included in the full course. Cubes, spheres, cones and cylinders, and where we find them.

Measure and Compare — Lesson 34 · Included in the full course. Longer or shorter, taller, heavier or lighter?

Sort, Count and Graph — Lesson 35 · Included in the full course. Sort things into groups, then read a picture graph.

The Great Math Detective Challenge — Lesson 36 · Included in the full course. One case from every unit. Can you solve them all?

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