You will learn
- Say what sorting means.
- Sort objects by one feature.
- Name the feature used to sort.
- Check that every object is in the right group.
Version 0.2 · expanded edition · built from cited public sources Content is based on the official frameworks and sources listed under Sources and standards. No official endorsement is claimed. Written in the style of common primary school assessments. No exam result is promised.
Student lesson
- To sort is to put things that are alike together.
- We sort by a feature such as colour, shape or size.
- Each object goes in one group.
- Check that every object is in the right group.
Words to know
Put things into groups.
Things that go together.
Something you can see, like colour or size.
Alike in some way.
1. Discover: tidy the market stall
A seller has mangoes, oranges and bananas in one big basket. How can she tidy them so customers find fruit quickly?
2. Understand: what is sorting?
To sort is to put things that are alike into the same group. We choose one feature, such as colour, shape, size or use, and put objects with the same feature together.
Sort red buttons with red buttons and blue buttons with blue buttons. Every object goes in only one group.
Idea 1: What sorting is
To sort is to put things that are alike into groups. We put all the red buttons together and all the blue buttons together.
Idea 2: Features
A feature is something you can see, such as colour, shape or size. Choose one feature to sort by.
Idea 3: Check your groups
Every object goes in one group only. Look again to make sure that nothing is in the wrong group.
Why check? A mistake in one group makes the counts wrong.
3. Worked examples
Example 1 (I show you): Sort by colour
Sort red and blue counters. Where does a red counter go?
- The feature is colour.
- Red goes with red.
Answer: The red group
Example 2 (We do it together): Count a group
Sort 2 red squares and 3 blue circles by shape. How many in the circle group?
- The feature is shape.
- Count the circles: 3.
Answer: 3
Example 3 (You try): Name the feature
A group of big things has which feature?
Show the steps and answer
- Big is about size.
Answer: Size
Did you know?
Libraries sort books into groups so we can find them. Shops sort goods on shelves.
Why this matters
Sorting makes things easy to find, count and compare.
4. Explore: sort the collection
You need 12 mixed items such as buttons, bottle tops and stones.
- Spread the items on a table.
- Choose a feature, such as colour.
- Put items into groups on paper.
- Check each group and say how they are the same.
Think about it: what did you notice?
Items in a group are the same in the feature you chose.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- I sort by ___.
- The ___ group has ___ things.
- This one goes in the ___ group.
- I checked and it is right.
Guided practice
Question 1. Sort red and blue buttons. How many groups?
2 groups.
Question 2. A group has a ball, an orange and a coin, all round. What feature?
Shape (round).
Question 3. Can one object be in two groups?
No, only one group.
Independent practice
Level 1: Start
- What does sort mean?
- Sort 6 items by colour.
- Name the feature of a group of big things.
- Sort the class by boys and girls.
- Check: is a blue bottle top in the red group?
Level 2: Grow
- 5 red and 2 blue buttons. How many are red?
- What feature groups all the circles?
- There are 8 objects. 5 are in one group. How many are in the other?
Level 3: Stretch
- Sort 2 red squares, 3 blue squares and 1 red circle by colour. How many are red?
- Sort the same objects by shape. How many squares?
- Ben puts a green button in the red group. What should he do?
Answers are in the answer key below. Try first, then check.
6. Apply: everyday mathematics
A shop has 3 shirts, 2 caps and 4 socks. Sort them by type. How many groups?
Show a sample answer
3 groups.
Another one. You have 3 red, 2 blue and 4 green pencils. Sort by colour. How many groups? How many pencils in all?
Show a sample answer
3 groups; 3 + 2 + 4 = 9 pencils
7. Common mistakes
Fix: Check each object against the feature.
Fix: Sort by one feature at a time.
Fix: Each object goes in one group.
8. Lesson summary and revision card
- I can say what sorting means.
- I can sort objects by one feature.
- I can name the feature I used.
- I can check my groups.
9. Check and master
Answer all 14 questions. You will see feedback after each one.
Your result appears here after you answer every question.
10. Key takeaways
- Sorting puts alike things together.
- Choose one feature first.
- Check every object.
11. Next lesson
Next lesson: Classifying objects. Keep going with the next idea in this course.
Exam practice
These questions are written in the style of common school and international primary assessments. Try them on your own, without looking back. Then check your answers in the marking guide. The marks are shown in brackets.
- What does sort mean? [1 mark]
- Name two features we can sort by. [2 marks]
- Sort: 3 red buttons and 4 blue buttons. How many in each group? [2 marks]
- There are 5 big and 2 small balls. How many balls in all? [2 marks]
- Ali puts a red cup in the blue group. What is wrong? [2 marks]
Total: 9 marks.
Marking guide and model answers
- To put things that are alike together [1]
- Any two of colour, shape, size [2]
- Red 3 [1]; blue 4 [1]
- 5 + 2 [1] = 7 [1]
- The red cup has the wrong colour [1]; it should go in the red group [1]
Score guide: 8 to 9 = secure. 6 to 7 = nearly there, revise the parts you missed. Under 6 = work through the lesson again with a grown-up.
Printable worksheet
- Sort means to put alike things in…
- Name a feature we can sort by.
- Sort 4 red and 3 blue. Red group has?
- How many groups with red and blue?
- Can one item be in two groups? (yes/no)
- Sort by colour: 3 red and 2 blue. Red group has ___.
- A feature of a group of big things is ___.
- What do we call things that go together?
- 6 objects: 4 in one group. How many in the other?
- Name one thing you sorted today.
Homework
Sort the spoons, cups and plates at home. Draw the groups.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| Sort means to put alike things in… | groups | 2 |
| Name a feature we can sort by. | colour, shape or size | 2 |
| Sort 4 red and 3 blue. Red group has? | 4 | 2 |
| How many groups with red and blue? | 2 | 2 |
| Can one item be in two groups? (yes/no) | no | 2 |
| Total | 10 |
Practice answers: Worksheet: 1 groups; 2 colour, shape or size; 3 4; 4 2; 5 no.
Quiz answers: 1 A, 2 B, 3 C, 4 A, 5 B, 6 A, 7 B, 8 C, 9 A, 10 B, 11 C, 12 A, Challenge 1 C, Challenge 2 C.
Extra worksheet answers (items 6 onward): 6 3; 7 size; 8 a group; 9 2; 10 Any sensible answer.
Independent practice answers. Level 1: 1 to put things that are alike into groups; 2 your own sorting of 6 items by colour; 3 size (big); 4 your own boys and girls counts; 5 No. It is blue, so it goes in the blue group. Level 2: 1 5; 2 Round shape; 3 3. Level 3: 1 3; 2 5; 3 Move it to the green group.
Mastery and remediation
| Objective | Bronze (Developing) | Silver (Proficient) | Gold (Advanced) |
|---|---|---|---|
| O1 Say what sorting means | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O2 Sort objects by one feature | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O3 Name the feature used to sort | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O4 Check that every object is in the right group | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
Courseversity badge thresholds (overall quiz score): Gold = 90–100%; Silver = 80–89.9%; Bronze = 70–79.9%. A badge is never a full record of progress.
If a learner struggles
- Find the misconception: Putting an object in the wrong group. Check each object against the feature.
- Explain another way: use real objects first, then pictures.
- Show a simpler example: Sort only by colour with 6 counters.
- Guided practice: work through one example together and let the learner try the next one.
- Reassess: use the quiz again or the worksheet.
- Move on when the learner shows Silver-level evidence independently.
For parents and guardians
In this lesson your child sorts objects by one feature and checks the groups. You do not need to be good at mathematics to help.
- Sort socks, spoons or fruit together.
- Ask: what feature did you use?
- Count how many are in each group.
- Ask “how do you know?” after each answer, and listen.
- Praise effort, not only right answers. Mistakes are how we learn.
- Ten to fifteen minutes a day is better than one long session.
Teacher package
1–5. Objectives, prerequisites, materials, preparation, duration
Lesson objectives. Learners will: say what sorting means; sort objects by one feature; name the feature used to sort; check that every object is in the right group.
Prerequisite knowledge. Counting to 20; shapes and colours.
Materials. Counters (stones, seeds or bottle tops), paper, pencils, board or chalkboard. Low-resource options: use stones, seeds, sticks, bottle tops or drawings in the sand or on the board instead of printed materials.
Preparation. Gather the counters and draw the example pictures on the board before the lesson.
Suggested duration. 45–60 minutes. It can be split into two shorter sessions.
6–9. Teaching procedure, explanation notes, guided and independent activities
Introduction (5 min). Start with the Discover situation and let learners suggest ideas before you teach.
Explanation (10 min). Teach the Understand section with real objects first, then pictures, then symbols and words.
Guided activity (10 min). You need 12 mixed items such as buttons, bottle tops and stones. Learners follow the Explore steps in pairs.
Independent activity (10 min). Learners complete the independent practice and the worksheet.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. What feature did you use? How many in each group? Is every object in the right place?
Teacher explanation notes. Use the concrete, pictorial, abstract order: real objects first, then pictures, then symbols and words. Return to real objects whenever a learner needs support.
10–12. Differentiation, formative assessment, common misconceptions
Support. Use real objects and work with a partner; say each step aloud together. Extension. Ask learners to make up their own example and explain it to a partner.
Formative assessment. Listen to learner explanations, ask “how do you know?”, and check the independent work.
Misconceptions. Putting an object in the wrong group. Check each object against the feature.
13–15. Assessment questions, answer keys, marking scheme
Use the quiz and worksheet on this page. The 9-mark exam practice scheme, the 10-mark scheme and all answers are in the answer sections above. Re-check every answer and the marking scheme before publication.
16–19. Remediation, enrichment, homework, teacher reflection
Remediation. Sort only by colour with 6 counters. Enrichment. Invite learners to find or create three more examples at home or in the classroom and explain them. Homework. See above.
Teacher reflection. After teaching, record: which concepts learners understood; which misconceptions occurred; which activities worked; which learners need more practice; and what to improve next time.
Sources and standards
This lesson is based on the sources below, and no official endorsement is claimed. Reference starting points named in the Courseversity standard: Common Core State Standards for Mathematics, Cambridge Primary and the IB Primary Years Programme. Where a standard code is named, it points to the official framework.
Official standards for this topic area. Common Core State Standards for Mathematics (official site): Grade 1 » Measurement & Data. These pages list the standards that cover this topic area; read them alongside the lesson.
Research used to shape this lesson. Common Core K.MD.B.3 (classify and count); Cambridge Primary Mathematics Stage 1 (sorting). These sources informed the lesson.