Learn with Amar
Teaching video
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Grade 4 chapters and video availability01 · Read and understand
What you will learn
- Distinguish repeated multiplication from repeated addition.
- Explain your method and check what the result means in the stated situation.
Before you start
Multiplication and division facts, simple fractions, place value, and basic length and area measurement.
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
A stated pattern doubles each step: 3, 6, 12, 24. What are the next two terms?
Why this math matters
Recognize whether a model grows by a fixed amount or a fixed factor. 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.
A pattern can multiply each step
PausedQuestion: Start with the question. Paused.
Question
Start with the question
A stated pattern doubles each step: 3, 6, 12, 24. What are the next two terms?
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
Each term = previous term × 2
The changing differences are not a fixed addition rule.
Connect the parts
24 × 2 = 48
Apply the stated multiplier once.
State and check the result
48 × 2 = 96; next terms 48, 96
Apply the same rule again to the updated term.
The result
48 × 2 = 96; next terms 48, 96
Apply the same rule again to the updated term.
Common mistakes to catch
- One matching step does not confirm a whole pattern's rule.
- Use the stated rule when finite data allow several continuations.
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
A pattern triples each step, starting at two. Give its first four terms.
Show a hint
Multiply the current value by three.
Reveal answer and explanation
2, 6, 18, 54
Each new term is three times its predecessor.
Practice 2
Does 5, 10, 15, 20 double each step?
Show a hint
Compare the successive ratios or gaps.
Reveal answer and explanation
No; it adds five
Ten doubles five, but fifteen does not double ten.
Take the idea with you
Recognize whether a model grows by a fixed amount or a fixed factor.
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: Group fraction pieces to simplify
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