# Teaching Notes

Measures - Weight and Mass

This week we are concentrating on measures and specifically looking at weight and mass. Mass is commonly measured by how much something weighs (how much matter it has.) If you are asked to find the mass of something, it just means to calculate its weight. Due to the bank holiday, we have only 4 lessons this week; we will be looking at reading scales, converting between different units of measurement, weight word problems and have a fun activity for Friday.

Mass Vocabulary

Spend time with your child going through the different units of measurement for calculating mass.

Check out the website link below to explore mass in more detail.

Monday - Bank Holiday

There is no work due for today as it is the Bank Holiday so take a walk, play a board game, have a kitchen disco or maybe even do some baking, you will be thinking about measuring without realising it. Enjoy your day and do something fun ðŸ™‚

Tuesday - Reading Scales

Children are already familiar with calculating and choosing appropriate equipment to weigh an item. Earlier in the year we enjoyed some practical maths where we weighed different items around the classroom. Ask you child to list 5 things you could measure in milligrams, grams, kilograms and tonnes. Can they identify the type of equipment you would use to measure a person compared to measuring flour? What would you use for a car?

When reading scales remember it is important to work out what each line stands for, not all scales are the same. Some markers may be 10, 20g, 50g or 100g. Look at the pictures below. The first scale is weighing in grams, each line stands for 10g.

In the second picture, it is measuring in kg with each line standing for 100g.

Click on the link below to have a go at reading the scales to work out the weight of the aliens, make sure it is set in kg and not lbs.

Wednesday - Converting Units of Measurement

Converting units of measurement means to work out what the equivalent weight is but in a different metric unit. For example you could weigh a bag of apples in g and it is 500g but you could convert it to kg and it would be 0.5kg. When converting units of measurement, children will apply their knowledge of place value, multiplication and division. The picture below explains the process of converting between units of measurement.

To explore converting units of measurement click on the link below.

Try the example questions in the picture below.

Thursday - Mass Word Problems

To calculate a weight or mass word problem we apply the same steps to solving any other word problem. Remember to work through the steps of RUCSAC to decide what the questions is asking you to do.

Encourage your child to draw out the problem using bar modelling method if they are struggling to understand or visualise the problem. For a reminder of bar modelling click on the teaching notes from last week.

Click on the links below to help solve the mass problems.

https://www.bbc.co.uk/teach/class-clips-video/maths-ks2-weighing-and-measuring/zrpvcqt

Now try these word problems.

Friday

Task 1 - An Amazing Fact A Day

For some Friday fun, we have set the children a challenge to work out what their weight would be in space! Children need to complete the table to work out what they would weigh on each planet. To calculate their weight on  distant planet they must multiply their mass (weight in kg) by the gravity they would feel pulling your body. The gravity is given in each table. If you do not have scales to weigh your child, the average 11 year old weighs 36kg.

Children completing step 1 work can complete the calculation using a calculator

Children completing step 2 and 3 work must write out the calculations and multiply them using the column method!

Happy investigating!

Task 2- Friday Test

This week's times table focus was x7. Ask your child their x7 tables in a random order ensuring you cover all times tables from 0 x 7 to 12 x 7.

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