Topicm53fa43f55bf973e1_1528449000663_0Topic

Converting units

Levelm53fa43f55bf973e1_1528449084556_0Level

Second

Core curriculumm53fa43f55bf973e1_1528449076687_0Core curriculum

XII. Practical calculations. The student:

3) does simple time calculations on hours, minutes and seconds;

6) converts and uses appropriately units of length: millimeter, centimeter, decimeter, meter, kilometer;

7) converts and uses appropriately units of mass: gram, decagram, kilogram, ton.

Timingm53fa43f55bf973e1_1528449068082_0Timing

45 minutes

General objectivem53fa43f55bf973e1_1528449523725_0General objective

Reading and interpreting data presented in various forms and processing it.

Specific objectivesm53fa43f55bf973e1_1528449552113_0Specific objectives

1. Converting units of mass and length.

2. Doing time calculations.

3. Communicating in English, developing basic mathematical, computer and scientific competences, developing learning skills.

Learning outcomesm53fa43f55bf973e1_1528450430307_0Learning outcomes

1. Converts units of mass and length.

2. Do estime calculations.

Methodsm53fa43f55bf973e1_1528449534267_0Methods

1. Situational analysis.

2. JIGSAW.

Forms of workm53fa43f55bf973e1_1528449514617_0Forms of work

1. Individual work.

2. Group work.

Lesson stages

Introductionm53fa43f55bf973e1_1528450127855_0Introduction

Students revise units of lengthunits of lengthunits of length, mass and time that they know.

Procedurem53fa43f55bf973e1_1528446435040_0Procedure

Students work individually, using computers. They open the Slideshow and observe how we can convert units of lengthunits of lengthunits of length, mass and time.

[Slideshow]

After having completed the exercise, they present results of their observations.

Conclusions:

- We can convert units of lengthunits of lengthunits of length using the relations between them:

1 km = 1000 m

1 m = 100 cm

1 m = 10 dm

1 dm = 10 cm

1 cm = 10 mm

- We can convert units of massunits of massunits of mass using the relations between them:

1 t = 1000 kg

1 kg = 100 dag

1 dag = 10 g

1 kg = 1000 g

- We can convert units of timeunits of timeunits of time using the relations between them:

1 day = 24 hours

1 hour = 60 minutes

1 minute = 60 seconds

1 quarterquarterquarter = 15 minutes

Students use obtained information in exercises and work using the JIGSAW method.

The teacher divides students into 3 persons groups. Each member of the group gets different task from the tasks below. After solving the tasks, students gather in groups that were doing the same task. They discuss the solutions and clarify any doubts. Then, they return to the initial groups and present the solutions to other members.

Task

Fill in the blanks.m53fa43f55bf973e1_1527752263647_0Fill in the blanks.

a) 36,5 km = ...... m

b) 5800000 cm = ...... m

c) 36000000 mm = ...... dm

d) 65,35 dm = ...... cm

e) 15,6 km = 15600 …

f) 324 cm = 324 …

g) 943 dm = 94,3 …

h) 2435 m = 24,35 …

Task

Fill in the blanks.m53fa43f55bf973e1_1527752263647_0Fill in the blanks.

a) 1,5 kg = ...... g

b) 32,16 t = ...... dag

c) 490000 dag = ...... kg

d) 2560000 g = ...... t

e) 125 t = 125000 …

f) 254 g = 0,254 …

g) 943 dag = 9,43 …

h) 2,43 kg = 2430 …

Task

Fill in the blanks.m53fa43f55bf973e1_1527752263647_0Fill in the blanks.

a) 6 days = ...... h

b) 16 h = ...... min

c) 360 min = ...... h

d) 420 s = ...... min

e) 15 days = 21600 …

f) 55 min = 3300 …

g) 0,75 h = 2700 …

h) 54000 s = 15 …

The teacher evaluates the students’ work and clarifies doubts.

An extra task:m53fa43f55bf973e1_1527752256679_0An extra task:

1 nautical mile = 1852 m.m53fa43f55bf973e1_1527752256679_01 nautical mile = 1852 m.

Using this information, convert 1520 km into nautical miles.m53fa43f55bf973e1_1527752256679_0Using this information, convert 1520 km into nautical miles.

Lesson summarym53fa43f55bf973e1_1528450119332_0Lesson summary

Students do the revision exercises. Then together they sum‑up the classes, by formulating the conclusions to memorise.

- We can convert units of lengthunits of lengthunits of length using the relations between them:

1 km = 1000 m

1 m = 100 cm

1 m = 10 dm

1 dm = 10 cm

1 cm = 10 mm

- We can convert units of massunits of massunits of mass using the relations between them:

1 t = 1000 kg

1 kg = 100 dag

1 dag = 10 g

1 kg = 1000 g

- We can convert units of timeunits of timeunits of time using the relations between them:

1 day = 24 hours

1 hour = 60 minutes

1 minute = 60 seconds

1 quarterquarterquarter = 15 minutes

Selected words and expressions used in the lesson plan

converting unitsconverting unitsconverting units

decagramdecagramdecagram

nautical milenautical milenautical mile

quarterquarterquarter

units of lengthunits of lengthunits of length

units of massunits of massunits of mass

units of timeunits of timeunits of time