Learn with Amar
Teaching video
A teaching recording for this chapter has not been published yet. Start with the worked example below and explore the related animations where available.
Grade 1 chapters and video availability01 · Read and understand
What you will learn
- Order three whole numbers from least to greatest.
- Explain your method and check what the result means in the stated situation.
Before you start
Recognizing small groups and saying counting words; an adult may read the prompts aloud.
Keep paper nearby. Read the question once for the context, then again to identify what is known and what you need to find.
Start with a question
Three baskets hold 9, 3, and 7 apples. List the counts from least to greatest.
Why this math matters
Arrange labeled supply baskets so their counts rise from one shelf position to the next. The worked example shows how to connect the situation, its mathematical representation, and a check on the result.
Set up the model
A useful answer starts with clear assumptions:
- Use the units, grouping rules, and reference whole stated in the question.
- Treat the supplied counts and measurements as exact within the classroom model, unless an estimate or a random outcome is requested.
02 · Work through the example
Follow the reasoning, one step at a time.
Try to predict the next step before reading it. After each calculation, explain why the operation makes sense and how it helps answer the original question.
Work through it with Amar
See this example unfold.
The complete worked example, one idea at a time.
Put three counts in order
PausedQuestion: Start with the question. Paused.
Question
Start with the question
Three baskets hold 9, 3, and 7 apples. List the counts from least to greatest.
Before you calculate
Read what is known and what you need to find. Make a prediction before moving to the first calculation.
Starts paused. Play advances through the full text at a reading pace; pause whenever you need more time. Previous, Next, and the phase buttons let you set your own pace. Playback pauses when this walkthrough leaves the screen or you switch tabs.
Your device’s reduced-motion setting keeps each phase still. Manual controls remain available. The full written solution stays below.
Represent the situation
3 is less than 7 and 9
Start with the smallest count.
Connect the parts
7 is less than 9
Compare the remaining two counts.
State and check the result
3, 7, 9
Reading the list forward always moves to a larger number.
The result
3, 7, 9
Reading the list forward always moves to a larger number.
Common mistakes to catch
- Least to greatest and greatest to least are opposite directions.
- Keep every original number in the ordered list.
03 · Practice independently
Try it before revealing the answer.
Use paper or a calculator as needed. Write your units and reasoning, then open the hint or explanation to check your approach.
Practice 1
Order 8, 2, and 5 from greatest to least.
Show a hint
Start with the largest.
Reveal answer and explanation
8, 5, 2
Each count is smaller than the one before it.
Practice 2
Which number fits between 4 and 6 in counting order?
Show a hint
Say the counting words around four.
Reveal answer and explanation
5
Four, five, six places five between the other two.
Take the idea with you
Arrange labeled supply baskets so their counts rise from one shelf position to the next.
04 · Reflect and continue
Can you explain it in your own words?
Before moving on, explain the main idea without looking at the worked example. Try both practice questions, check your reasoning, and name one mistake you now know how to avoid. Return to a step if you still need support.
Up next: Positions in a line
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