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Mathseeds Lesson sequence

TEACHContent and skills

PRACTICEChildren will:

APPLY

Animated Lesson:Recognize weight difference

Use a balance scale to determine which items are heaviest and lightest. Find how many eggs weight the same as an item by balancing the scale.Song: Heavy, Light and the Same

identify items which are heaviest or lightest by putting them on a balance scale. Move enough small objects to balance the item on the scale.

Worksheet 1Heavy and light

Sort:Heavy or Light?, Balance Scales, Smallest Area, How Many Squares?, Light, Heavy, Heaviest

Differentiate items by weight. Identify the item which takes up the smallest area. Measure area in squares using a grid.

label items as heavy and light. Choose the object which is heavier or lighter. Select the smallest item. Identify which shape is larger. Order items by weight.

Worksheet 2Balance scales

Find:Number Grid, Buses, Number Words

Identify the numeral 34. Recognize the word heavy. Match numerals and their number words.

select the numeral 34. Choose the given word. Select the word for a numeral.

Worksheet 3 Weighing the same

Operations:Cover Up

Subtract some items from a group and find the new total.

count how many, take some away and count how many are left.

Worksheet 4 Check

Read:Book

Read aloud book. listen, follow the reading and read along.

Mathseeds book 73: Which one is heavier?

Learning objectivesChildren will:

• identify items which are heavy and light.

• use a balance scale to sort items by weight.

• understand that if the scale balances they weigh the same.

Common Core State StandardsMeasurement & Data

Describe and compare measurable attributes.

K.MD.A.1 Describe measurable attributes of objects, such as length or weight.

K.MD.A.2 Directly compare two objects with a measurable attribute in common, to see which object has “more of”/”less of” the attribute, and describe the difference.

Operations & Algebraic Thinking

Add and subtract within 20.

1.OA.C.5 Relate counting to addition and subtraction.

Key vocabularybalance scale, heavy, light, heaviest, lightest, the same, heavier, lighter, numerals 1–40, how many, left, –, =, smallest, area, shape, cover, squares, larger, number words one to forty, weigh, order

Extra assistanceWeight is an area where kinesthetic lesson ideas really reinforce the concept. Have a variety of objects for students to weigh. Begin with hefting the items, one in each hand where possible, to get a sense of their relative weight and order them from heaviest to lightest. Then use a balance scale to confirm the order. For extension students, provide a digital scale to measure the items which seem the same.

Classroom activitiesWhich Hat?

Place three hats on the floor with the labels lighter, heavier and the same, then put out an object to compare to, such as an apple. Have a set of items or pictures of things which are lighter, heavier and the same weight as the object. Each student chooses one and works out which hat it must go in. Allow them to heft the items or use a balance scale if they are not sure.

Compare and Write

Have a set of items and a balance scale on a table. Write the phrases is heavier than, is lighter than and is the same as on the board. Ask each child to choose two items to weigh and write a sentence using one of the phrases, eg The apple is heavier than the feather. After they illustrate it with a drawing of a scale and the two items, the class can make a book.

Lesson 73 • Heavy and light part 2

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Related Mathseeds Activities, Interactives, Apps, and Books

Mathseeds Poster (for printout or IWB)

Mathseeds Library Big Books (for IWB)

Lesson 73

Math Apps

Mathseeds 1

Mathseeds 1 Toolkit

Targeting Math Lower PrimaryMass (Unit 1)

52

Lower Primary

Mass

CONTENT DESCRIPTIONSUsing units of measurement: ACMMG006 Use direct and indirect comparisons to decide which is longer, heavier or holds more and explain reasoning in everyday language.

© Australian Curriculum, Assessment and Reporting Authority 2012.

Proficiency StrandsUnderstanding:

• Size does not always relate directly to mass.

Fluency:

• Estimate, compare, order and measure the mass of objects using informal units.

• Sort and describe objects in terms of their size and shape.

Problem solving:

• Use number skills involving whole numbers to solve problems.

LANGUAGEgreater, mass, easy, hard, hardest, pull, lift, heavier, lighter, seesaw, lighter than, heavier than, balance, the same as, number, add, take away

MATERIALScoloured pencils, balance scales

BLM CONTENT• materials needed for each BLM

1.1 Greater mass – circle the objects with greater mass.• coloured pencils

1.2 Compare mass – identify the objects that are harder to push, lift and pull up.

1.3 Lighter, heavier, balanced – identify lighter than, heavier than, balanced.

1.4 Lighter/heavier – find correct sentence to describe pictures; write own sentence.

1.5 Equal mass – count number of marbles needed to balance the scales.

1.6 Problem solving – solve mass problems pictorially.

1.7 Assessment

1.8 Activity – The new chicken house; solve a problem.

UNIT 1Compare massesLighter, heavierLift, pullAdjust mass

Targeting Maths © Blake Publishing 2012

Remember• Give students many opportunities to heft and to use the balance scale

so they realise that size is not directly linked to mass.

• Encourage students to estimate and then to check.

*53

Mass Unit 1

ANSWERSBLM 1.1Teacher check

BLM 1.2Teacher check

BLM 1.3Teacher check

BLM 1.41 a Peter is heavier than Anna. b The red bucket is the same as the

yellow bucket. c The marbles are lighter than the book. d The two boxes are heavier than one box.2 Teacher check

BLM 1.5Teacher check

BLM 1.6Teacher check

BLM 1.71 a Circle the pram containing babies. b Circle the pile of 3 bricks.2 a Circle the lower child. b Circle the higher box.3 a The blue bucket is the same as the

green bucket. b The doll is lighter than the bear.4 a b

5 Red bucket would be lower than the blue bucket.

BLM 1.8

ADDITIONAL ACTIVITIES• Provide students with many opportunities to heft

objects of different sizes and masses. Provide opportunities for lots of discussion and encourage students to record results.

• Provide opportunities for students to compare and order masses. Record some of the results practically.

• Provide opportunities for students to use the balance scales in play and spare time.

• Experiment with a seesaw placing children on it.

• Discuss the best way to move piles of books.

• Use a wheelbarrow to experiment with pushing various loads.

• Student can dramatise pushing and pulling objects. Read to the students ‘The Tale of the Turnip’ by Brian Alderson and get them to dramatise the story.

• Have a collection of items. Choose one to hold. Have students choose another item that is heavier or lighter than that one.

• Get the students to wrap parcels, then have others heft them and guess what is in them.

• Read to the students and discuss Henry Pluckrose’s ‘Weight’, Franklin Watts, London, 1987.

Targeting Maths © Blake Publishing 2012

blue red blue red

2

4 6

53 1

Map 15: Jurassic

Mr T the T-rex

Mathseeds 1 Toolkit

Targeting Math Literacy book – Metric Measurement