Topicma7caffb2a7b70544_1528449000663_0Topic

Natural numbers

Levelma7caffb2a7b70544_1528449084556_0Level

Second

Core curriculumma7caffb2a7b70544_1528449076687_0Core curriculum

I. Natural numbers in the decimal numeral system. Student:
1) writes and reads multi‑digit natural numbers;
2) interprets natural numbers on the number line.

Timingma7caffb2a7b70544_1528449068082_0Timing

45 minutes

General objectivema7caffb2a7b70544_1528449523725_0General objective

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

Specific objectivesma7caffb2a7b70544_1528449552113_0Specific objectives

1. Writing and reading multi‑digit natural numbers.

2. Selecting natural numbers on the number line and reading the natural numbers marked on the number line.

3. Communicating in English, developing mathematical, scientific, technical and IT competences, developing learning skills.

Learning outcomesma7caffb2a7b70544_1528450430307_0Learning outcomes

The student:
- writes and reads multi‑digit natural numbers,
- selects natural numbers on the number line and reads the natural numbers marked on the number line.

Methodsma7caffb2a7b70544_1528449534267_0Methods

1. Flipped classroom

2. Task – based stations

Forms of workma7caffb2a7b70544_1528449514617_0Forms of work

1. Whole class

2. Group work

Lesson stages

Introductionma7caffb2a7b70544_1528450127855_0Introduction

Prior to the lesson students collect information about natural numbers and their interpretation on the number line and take notes in their notebooks.

The teacher divides the students into four groups. The task of each group is to prepare and present the answers to the questions posed by the teacher.

1. What numbers are called natural numbers? How many such numbers are there? Is there the largest or the smallest natural number?

2. What is the difference between a digit and a number? How can you define a digit? How many Arabic numerals are there?

3. Why is the system we use called the decimal number system?ma7caffb2a7b70544_1527752263647_0Why is the system we use called the decimal number system?

4. How to interpret natural numbers on the number line?ma7caffb2a7b70544_1527752256679_0How to interpret natural numbers on the number line?

Students present prepared information.

- In the decimal number system, digitsdigitsdigits are used to write numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, called Arabic numeralsarabic numeralsArabic numerals.

- Natural numbersnatural numbersNatural numbers are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ..., 56, ..., 99, 100, ...

- Each natural number corresponds exactly to one point on the number linenumber linenumber line.

Procedurema7caffb2a7b70544_1528446435040_0Procedure

Students work using the task station method. They solve tasks previously prepared by the teacher in four groups.

Each group receives points for correctness and time of solving tasks. Members of the best group receive excellent grades.

Station 1
Students receive worksheets with digits 6, 5, 2. Their task is to create and write all the possible combinations of these digits to create two‑digit numbers.

Station 2
On the desk there are ten cards with digits from 0 to 9. Students draw three cards. Their task is to create the smallest and the largest three‑digit number from the drawn cards.

Station 3
Students write the numbers given in words:
a) nine hundred and fifty‑two,
b) thirty‑five thousand eight hundred,
c) three thousand and seven,
d) sixty‑four thousand and twelve,
e) four hundred and eight.

Station 4
Students receive worksheets with numbers: 205, 698, 140, 47, 2356, 857, 86, 3030, 3568, 548.
They mark:
a) in green, numbers in which the digit of thousands is less than 4,
b) in red, numbers in which the digit of hundreds is greater than 5,
c) in blue, numbers in which the digit of units is greater than the digit of tens.

Station 5
The students' task is to read the numbers coded in the table and write them in words and digits.

numbers to read

Thousands

Units

8

6

5

2

4

3

5

3

2

1

2

5

5

Station 6
Students use computers. Their task is to mark points with natural coordinates on the number line.
[Geogebra applet 1]

Station 7
Students draw the appropriate number lines and mark the numbers on them:
a) 0, 4, 6, 8,
b) 5, 15, 20, 30,
c) 150, 200, 300, 350.

The groups present the results of their work, explain the doubts.

An Extra Task
Write three‑digit numbers, in which the digit of hundreds is twice smaller than the digit of units, and the digit of units is two times smaller than the digit of tens.

Lesson summaryma7caffb2a7b70544_1528450119332_0Lesson summary

Students do revision exercises.

Then, they summarize the lesson together, formulating information to remember:

- In the positional numeral system, digits called Arabic numerals, are used to write numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

- Natural numbers are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ..., 56, ..., 99, 100, ...

- Each natural number corresponds exactly to one point on the number line.

Selected words and expressions used in the lesson plan

arabic numeralsarabic numeralsarabic numerals

natural numbersnatural numbersnatural numbers

digitsdigitsdigits

unitunitunit

zero pointzero pointzero point

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digits1
digits

cyfry

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arabic numerals

cyfry arabskie

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wymowa w języku angielskim: arabic numerals
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natural numbers

liczby naturalne

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wymowa w języku angielskim: natural numbers
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number line

oś liczbowa

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jednostka miary

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zero point

punkt zerowy

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wymowa w języku angielskim: zero point