Helping with math homework you don't remember

Who this is for

You are a parent or guardian who wants to be useful with schoolwork but does not feel confident in the subject. You do not have to become the teacher. You just need to be a good partner for thinking out loud.

The plan at a glance

1. 1.Ask your child to explain the problem in their own words.
2. 2.Find where it stops making sense. That is the real question.
3. 3.Look at a worked example together, from the textbook or class notes.
4. 4.Let your child try the next problem while you watch, without taking over.
5. 5.Check the answer by estimating, then say what you learned.

Step by step: being a good partner

1. 1. Ask your child to explain

   "Tell me what this is asking, and what you've tried." Often the child finds the mistake while explaining. If not, you now know the stuck point.

2. 2. Say what you do not remember

   "I forgot how this works, so let's figure it out together." That is honest, and it shows that not knowing is a normal first step.

3. 3. Use worked examples

   Find a solved problem in the textbook or notes. Cover the solution and try to rebuild it step by step, then compare.

4. 4. Learn alongside them

   Read the lesson page together. If the method is new to you, say so and follow it as a student would.

5. 5. Hand the pencil back

   After one example, your child does the next problem. If you keep the pencil, you are doing the learning, not them.

Worked example: helping with fractions you learned long ago

The problem is 2/3 + 1/4. Your child writes 3/7, by adding the tops (2 + 1 = 3) and the bottoms (3 + 4 = 7). You do not remember the method, but you can still help.

Start with a question, not a correction: "Is 3/7 bigger or smaller than 2/3?" Your child might not be sure. Try a picture: 2/3 of a pizza is more than half. 3/7 is less than half, since half of 7 is 3.5 and 3 is below that. You are adding something to 2/3, so the answer cannot be smaller than 2/3. The estimate says 3/7 is wrong, and you found that without solving anything.

Now look at a worked example in the book. It will show that fractions can only be added when the pieces are the same size, which means finding a common denominator. Here is what it looks like for this problem.

1. 1.Find a common size for the pieces. The smallest number that both 3 and 4 divide into is 12.
2. 2.Rewrite 2/3 with 12 on the bottom: multiply top and bottom by 4 to get 8/12.
3. 3.Rewrite 1/4 with 12 on the bottom: multiply top and bottom by 3 to get 3/12.
4. 4.Add the tops, keeping the bottom: 8/12 + 3/12 = 11/12.

Check it: 11/12 is less than 1, and it is more than 2/3, since 2/3 = 8/12 and 11 is more than 8. That matches the estimate. Also check the decimals: 2/3 is about 0.667 and 1/4 is 0.25, which add to about 0.917, and 11 ÷ 12 is also about 0.917. They agree.

Now hand over the pencil with the next problem, say 1/2 + 1/5, and let your child do the whole thing. The right answer there is 5/10 + 2/10 = 7/10.

If something goes wrong

• Your child gets frustrated. Take a five minute break and come back to a smaller version of the problem.
• The method your child was taught differs from yours. Follow the class method, since that is what they will be tested on. You can compare methods after the homework is done.
• You are both stuck. Write down the exact question for the teacher. Having a specific question makes the next class far more useful than "I don't get it."

Keep it going

Keep the same simple routine each night: explain, example, try, check. Over time, your child will start to do the explaining step on their own before they come to you, and that is the habit that helps most.