Kindergarten Addition and subtraction: Free Course

About this course

Addition joins quantities and subtraction describes taking away or finding what remains. This kindergarten sequence uses small numbers, pictures and stories to introduce both operations. Study the complete public source playlist from Khan Academy in English, with all 9 recordings in the on-site classroom. Original lesson titles, source order and repeated entries are preserved.

Course at a glance

What you’ll learn

• Represent addition and subtraction with objects or pictures.
• Find combinations that make five and ten.
• Connect simple stories with number sentences.
• Explain and check calculations within ten.

Skills you’ll gain

• Early addition
• Early subtraction
• Number bonds
• Story problems

Course Overview

The recordings develop combinations that make five or ten and connect those combinations with number sentences. Boxes and familiar objects give the arithmetic a visible meaning. Word problems ask learners to identify the starting quantity, the change and the result. The course stays focused on addition and subtraction within ten, making it suitable for practical demonstrations with counters or drawings. Keep the operation connected with the story rather than asking for a symbol before the learner understands the action. Different ways to make the same total can then become a foundation for later mental strategies.

How to study the course

• Videos 1–2: this part of the source list includes “Addition word problems within 10” through “Adding to 10”. State the quantities and conditions before calculating. Keep a brief working note, revisit an unclear explanation and test one example before moving to another part of the material.
• Videos 3–4: this part of the source list includes “Making 5” through “Introduction to subtraction”. Keep equivalent expressions or representations connected. Keep a brief working note, revisit an unclear explanation and test one example before moving to another part of the material.
• Videos 5–6: this part of the source list includes “Getting to 10 by filling boxes” through “Introduction to addition”. Check each operation with a small example before extending it. Keep a brief working note, revisit an unclear explanation and test one example before moving to another part of the material.
• Videos 7–9: this part of the source list includes “Pieces of fruit” through “Subtraction word problems within 10”. Explain a result in words as well as symbols. Keep a brief working note, revisit an unclear explanation and test one example before moving to another part of the material.

Who is this for?

This course suits students, returning learners and anyone strengthening the specific mathematics named in the course. It also provides a recorded reference for revisiting a topic after an earlier lesson or study attempt. Choose examples appropriate to your background and allow time to work through the method instead of judging understanding only by how familiar the terminology sounds.

Before you start

Comfort with the preceding arithmetic or algebra skills is useful. Keep paper, a pencil and a calculator when a lesson uses one. Grade-specific courses assume the learner’s earlier grade-level knowledge.

Put the lessons into practice

Use counters to make a total of ten in several ways and record each combination. Tell a short joining story and a taking-away story using the same objects. Ask the learner to show the action before writing the number sentence. Check a subtraction by putting the removed objects back.

This optional study activity is provided by WikiFree for independent practice. Keep your working notes and use the relevant classroom recording to check a step, definition or interpretation. It is not an instructor-marked assignment.

Certificate / Assessment

Watching the public videos and using WikiFree completion tracking does not award a certificate, academic credit, an examination voucher or instructor assessment. Use your practice output to review what you can explain and repeat independently. The recorded lessons provide study material; completion tracking records your progress through that material.

Frequently asked questions

Provider: Khan Academy. Videos play from the Khan Academy channel on YouTube.