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p.10 Direct Comparison of Lengths and Capacities Problem solving p.11

Type Study There are crayons and an eraser in Mike's pencil case. Find 1 Find the longest path home.
his pencil case.

My eraser is
longer than the
blue crayon and
shorter than the

red crayon.

A BC Tip
Think of each path as
a rope.

2 Number the objects in order starting with the widest.

13 2

Direct Comparison Tip

Measurement is a concept that shows numbers in length, area, weight, capacity, and volume among the many Think about what the
properties of an object. The field of measurement begins with comparison. There is direct comparison and objects would look
indirect comparison. Direct comparison is used when objects are directly placed on top of or next to each other. like if they were
placed on top of each
10 NUMINO Challenge K1 other.

11Measurement

By using expressions of comparison such as longer than, shorter than, and the same on
the objects that are placed side by side, we can pair 2 objects and compare them.
Compare their lengths with the other objects to compare the lengths of 3 objects.

p.12 Direct Comparison of Weights and Capacities Problem solving p.13

Type Study Write the letters of the containers starting from the highest 1 The water that was filled to the top in cup A was poured into
capacity to the lowest.
cup B, and it overflowed. Which cup can hold more water?
AB C
AA
C --B --A Compare the size
of each container. B
If the containers are the Tip
same size, count the
number of intervals the If the water that is
filled to the top in a
liquid reaches. larger cup is poured
into a smaller cup, the
water will overflow.

2 Write the names of the animals from the heaviest to the lightest.

Volume and Capacity Cat --Dog -- Squirrel

It is easy to consider volume and capacity as a similar concept. Volume is the space that an object occupies, and Tip
capacity is the amount that an object can hold. The heavier animal
For example, the volume of the following container is highlighted in blue on the left and the capacity is leans lower on the
highlighted in blue on the right. scale.

12 NUMINO Challenge K1 13Measurement

When comparing the amount of water in two When comparing the weight of three objects
cups having different shapes, check the height pair and compare two objects at a time.
of the water level and the size of the cup.

3Answer Key
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