Mini Minds Hub · Free printable
Fizz Test Recipe Card: Free Printable Worksheet for Year 6
- ForYear 6
- StageKey Stage 2
- CostFree
- FormatPrintable PDF
Fizz Test Recipe Card is a free printable science worksheet for Year 6 (ages 10 to 11). Children scale up a mix for a fizzing investigation, then think about how to plan a fair test. It brings together measuring, ratio and prediction, needs only a pencil, and page 2 gives the grown up notes, help ideas, a stretch task and the answers.
It comes from the Mini Minds Hub, the free library of printables from Jaques of London, the British games and toy company that has been making games for families since 1795. Print both pages, give page 1 to your child and keep page 2 for yourself. Black and white printing works well.
What is on the sheet
Children meet a table to fill in with ingredient amounts, numbered questions with space to write answers, and a checklist of safety and measuring reminders. The questions cover ratio in its simplest form and finding a total for a bigger batch. The reminders cover reading scales at eye level and repeating a test to find the mean. Together, the parts link scaling a mix with planning a fair test.
- Ingredient
- 1 cup
- 3 cups
- Half a cup
- Write the ratio of water to vinegar in its simplest form.
- A tray holds 6 cups. How many ml of vinegar are needed in total?
- Wear goggles and tie back long hair.
- Read each scale at eye level.
- Repeat three times, then find the mean.
Worked example: scaling up a mix
A mix uses 30 ml of lemon juice. You need 4 batches. How much lemon juice is needed in total?
This is a different question from the one on the sheet. It shows two ways to scale an amount.
Method 1: multiply- Write what you know: 1 batch needs 30 ml.
- Multiply by the number of batches: 4 × 30 ml.
- 4 × 3 tens is 12 tens, which is 120 ml.
- Double 30 ml to make 2 batches: 30 + 30 = 60 ml.
- Double again to make 4 batches: 60 + 60 = 120 ml.
- Check that both methods give the same total.
Ideas for setting up a fair fizz test
Check your equipment
Before starting, look at the measuring jug and scales. Find out what each mark stands for. Children should know the size of each step on the scale before they read it.
Change one thing only
In a fair test, children change one factor on purpose, such as the amount of vinegar. Ask them to say out loud which one thing they will change.
Keep everything else the same
Use the same cup, the same container and the same method every time. If two things change at once, nobody can tell which one caused the result.
Record, repeat and compare
Write results in a neat table. Repeating a test and finding the mean gives a more reliable result than relying on a single go.
Why plan a fizz test?
Fizzing mixtures are a popular way to practise working scientifically. Many fizz investigations use vinegar with bicarbonate of soda, which react together and release a gas. Children can see the result straight away, which makes it easy to talk about what changed. That visible result gives them a real reason to measure carefully and to ask why one mix behaved differently from another.
A recipe card also brings maths into science. Scaling a mix up means keeping the amounts in the same ratio, so the mix stays the same type of mix, only bigger. This links to ratio and proportion in Year 6 maths. Children who can scale a recipe and plan a fair test are doing real investigation work.
Adults should set up the investigation and check the mixes before children begin. Children should wear goggles, tie back long hair and keep the mixture away from their eyes and mouths. Nothing should be tasted. Vinegar can sting eyes, so rinse with clean water if it splashes. Adults deal with spills and tidying up. Work on a tray or outdoors.
Fizz and fair test facts
- The bubbles in many fizzing mixtures are a gas called carbon dioxide.
- Fizzy drinks also contain carbon dioxide, which is dissolved in the liquid.
- A fair test changes one thing and keeps the other things the same.
- To find the mean, add up all the results, then divide by how many results there are.
- A cup is not a fixed unit of measurement, so a recipe needs the same cup for every ingredient.
Skills and curriculum link
- Scaling quantities
- Ratio in simplest form
- Fair testing
- Accurate measuring
- Finding the mean
- Predicting from data
Ideas for helping with a fizz test
- Ask about the variableAsk, "What is the one thing we are changing?" Children often want to change several things at once. Say it out loud before they begin.
- Talk about reading scalesShow how to bend down and look straight across at the scale. Looking from above or below can make a reading look different.
- Look at the unitsCheck whether an amount is in cups, spoons or ml. Mixing units is an easy way to make an error, so ask children to label every number.
- Make a prediction firstAsk what children think will happen before they test. Afterwards, compare the result with the prediction and talk about why they matched or did not.
Key words
- Scale upMake a recipe bigger by multiplying every amount by the same number.
- RatioA way to compare two amounts. It shows how much of one thing goes with another.
- Simplest formA ratio with the smallest whole numbers that still show the same comparison.
- VariableSomething in an investigation that can change, such as an amount or a time.
- Fair testA test where only one variable is changed and the rest are kept the same.
- MeanA type of average. Add the results together, then divide by the number of results.
How to use it
- Print both pages. Page 1 is for your child. Keep page 2, which has the notes and answers.
- Read the checklist together first. Talk about why each reminder matters for a safe and accurate investigation.
- Let your child work through the table and questions. Encourage them to show their working on the page.
- If you are doing the investigation, use a measuring jug and scales to check the scaled amounts, with an adult in charge of the setup.
- Check against page 2. Ask, "How did you decide that?" Then come back another day to try the harder parts again.
Help, stretch and game ideas
If it feels too hard
Let children double the recipe first. Use counters or a number line for each ingredient, so they can see the amount growing in equal steps. Once doubling feels secure, try tripling, then move on to the larger batch on the sheet.
To stretch confident children
Ask for a table and a line graph of foam height against vinegar. Children then use the shape of the line to predict what would happen with 55 ml. Ask them to explain how sure they feel about that prediction.
Make it a game
Swap recipe cards with a partner. Each person makes the other's mix, with an adult handling the setup, and checks that the amounts are right. Talk about any amounts that look wrong and how you could fix them.
Mistakes to watch for
Watch forA child scales one ingredient but forgets to scale the others.
Try thisWrite a checklist of every ingredient. Tick each one only after its amount has been multiplied by the same number.
Watch forA child reads a scale from above and gets a slightly different number each time.
Try thisShow how to bring the eyes level with the scale. Practise reading one amount together until the readings match.
Watch forA child divides the total by the wrong number when finding the mean.
Try thisCount the results first. Say, "The mean divides by the number of results," then check that the count matches the divisor.
Talk about it
- What is the one thing we are changing, and why only one?
- How can we be sure two tests are fair to compare?
- What do you predict will happen, and what makes you think so?
- Why does it help to repeat a test more than once?
- What would happen to the ratio if we only scaled one ingredient?
- If a result looked very different from the others, what could have gone wrong?
Take it off the page
Measuring practice
Use jugs and cups of water to find how many small cups fill a large one. Write down the result. Keep the same cup each time so the comparison is fair.
Predict and draw
Draw a graph with made up results, then ask a friend to predict the next point. Talk about how the pattern helped them guess.
Scaling a snack plan
Write out a recipe for a family snack, then scale it for twice as many people. An adult does any cooking. Children only work out the amounts on paper.
Who it is for
Parents
Sit with your child for the first go, then let them lead. Read the checklist together and talk about each choice. Short sessions work well. Praise careful thinking, not only correct answers.
Teachers
Use it as a recipe card before an investigation, a starter, a plenary or a table activity. It links ratio and scaling in maths with fair testing in science. Page 2 gives support and stretch ideas for mixed ability groups.
Home educators
Pair it with an investigation at home, with an adult in charge of the setup. Use it alongside books and everyday measuring. It can be printed again for brothers and sisters or for revision a few weeks later.
Where this fits in learning
Before this, children measure in standard units, carry out simple comparative tests and meet the idea that a test must be fair. In maths they learn about multiplication, division and simple fractions, which they need for scaling.
After this, children move on to planning their own investigations and choosing equipment. They draw graphs, spot patterns in data and meet more formal ratio work. These skills lead on into Key Stage 3 science.
Questions parents and teachers ask
- What age is Fizz Test Recipe Card for?
It is written for Year 6 (ages 10 to 11), in Key Stage 2. Younger children can try the support idea of doubling the recipe, and older children can try the stretch task with a graph.
- Do children need any equipment?
They need a pencil for the sheet. To check scaled amounts, children can use a measuring jug and scales. An adult should set up and supervise any real fizz investigation.
- What will children practise?
They practise scaling quantities, writing a ratio in simplest form, taking accurate measurements, planning a fair test and finding the mean. They also use results to make a prediction.
- Is it free?
Yes. It is free to print for home and classroom use. You can print it again for brothers, sisters or revision whenever you like.
- Does it come with answers?
Yes. Page 2 is for the grown up. It has notes on how to use the sheet, help for children who find it hard, a stretch idea and the answers.
- Can teachers use it in class?
Yes. Teachers can use it as a starter, plenary, early finisher task, homework or table activity. It needs no preparation beyond printing, and page 2 helps with support and stretch.
- Do I need to print in colour?
No. It prints well in black and white on plain A4 paper, so it works at home or in the classroom without special ink.
Preview the full PDF
Made by Jaques of London, making games for families since 1795. A printable supports classroom learning and does not replace a teacher.