3.26 To record temperature using degrees celsius

Mathematics

Measurement and time

Temperature

Educator section

Memorandum

1. Temperature

2. 180 °C

4. 100 °C

6. 38 °C

7. 0 °C

1.1 –4 °C

1.2 25 °C

1.3 –12 °C

1.4 38 °C

1.5 –18 °C

1.6 –10 °C

2.1 38 °C

2.2 -18°C

3.1 10 °C

3.2 8 °C

3.3 6 °C

3.4 7 °C

3.5 –3 °C

4. 6,5 °C; 12,5 °C; 1 °C

ASSESSMENT: MEASURING

1.1 375 mℓ

1.2 0,62 kg

1.3 0,1

1.4 5 000

1.5 2 m

2.1<

2.2>

2.3<

2.4<

2.5>

3.1 l × b × h

3.2 (1 m × 1 m × 1 m) + (2 m × 2 m × 3 m)

= 1 m³ + 12 m³

= 13 m³

4.1 5 °C

23 °C

19 °C

4.2 1 380 ÷ 120 = 11,5

11 $\frac{1}{2}$ h

4.3 (43 + 41,4 + 39,8 + 42 + 41,2) ÷ 5

= 207,4 ÷ 5

= 41,48 °C

5.1 300 cm × 400 cm

3 m × 4 m

5.2 3 m × 4 m = 12 m²

5.3 W (12 × 8) + (16 × 2) + (10 × 2) = 148

S 28 + 16 = 44

5.4 $\frac{\text{44}}{\text{148}}$ = $\frac{\text{11}}{\text{37}}$

6. 7 $\frac{1}{2}$ × 4 cm²

= 30 cm²

7.1 (175 mm × 6) + (32 mm × 2) + 145 mm

= 1 835 mm

= 1,835 m

7.2 3,165 m

8.1 (18 × 4) + (12 × 2) = 96

8.2 40 min + 24 h + 6 h 15 min

= 30 h 55 min

Leaner section

Content

Let's begin by looking at some general questions.

• With what instrument do we measure temperature?________________________
• At what temperature does your mother usually bake a cake?______________o C
• What is the temperature of your bath water? ±_______________________o C
• What is the temperature of boiling water? ±_______________________o C
• What was the temperature on the hottest day last summer?_______________o C
• What is the body temperature of a healthy person? ±_________________o C
• What temperature is the freezing point of water?_______________________o C

DO YOU REMEMBER THIS?

°C

Activity: to record temperature using degrees celsius [lo 4.4.4, lo 4.6.4]

1. Read the temperature on each of the following thermometers.

1.1_______

1.2_______

1.3_______

1.4_______

1.5_______

1.6_______

2. Which temperature is:

2.1 the highest: ______________________________

2.2 the lowest: ______________________________

3. What will the thermometer indicate if the temperature:

3.1 rises by 8 degrees from +2 ºC? ______________________________

3.2 rises by 12 degrees from –4 ºC? _____________________________

3.3 rises by 7 degrees from –1 ºC? ______________________________

3.4 drops by 11 degrees from 18 ºC? ____________________________

3.5 drops by 10 degrees from 7 ºC? _____________________________

4. What is the reading on the following thermometers?

___________________

___________________

___________________

ASSESSMENT: MEASURING

1. Complete

1.1 ℓ = _________________________ mℓ

1.2 2,480 kg ÷ 4 = _________________________ kg

1.3 360 ÷ (_________________________ × 90) = 40

1.4 (20 × 102) + (3 × 103) = _________________________

1.5 25 % of 8 m = _________________________ m

2. Fill in>;<; =

2.1 0,015 m * 15 cm

2.2 1,37 kg * 137 g

2.3 1 m * 1 775 mm

2.4 72 min * 1 h

2.5 5 cups * 1 ℓ

3.

3.1 Write down a formula for calculating the volume of a cube.

____________________________________________________________________

3.2 Now use this formula to determine the volume of the following shape:

_____________________________________________________________________

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