Lesson Planning of Decimal and Fractions
Students` Learning Outcomes
- Know a decimal number
- Define decimal as a fraction whose denominator is 10 or a power of 10.
- as an alternative way of writing a fraction.
Information for Teachers
- A decimal number is a number that has a decimal point somewhere in number could look like these: show fraction with a dot (ֺ▪)
- Ashraf`s house is 3.429 km from school. The parts of this distance can be shown like this: as;
- We can say that Ashraf’s house is 3.429 meters from school. We can also say that Ashraf’s house is 3 km and 429 meters from school.
- The best way to write the distance is 3.429 km away. This means we are using decimals and have to understand what the decimal parts mean, as;
0.8 In table form
1.123 In table form
3.429 In table form
0.124 In table form
666.666 In table form
1234.224 In table form
Material / Resources
Writing board, chalk/marker, duster, mud balls one per group (playing dough / plasticize can also be used in place of mud balls if available, graph paper, textbook
- Ask the students:
- Have you seen the electricity bill, petrol prices, telephone bill or mobile bill “free sms bundle offer!”
- Ask the students to describe places where they have seen decimals. List their responses on the board.
- Ask somebody to define factors, collect responses on board. Now conclude the discussion on “parts of whole”.
- Announce that today we are going to look at fractions in another way that is called: Decimals” [parts of a whole].
:Fraction are also represented by decimals, as;
Teachers in put (Continue to explain)
Working in Pairs:
Sum up / Conclusion
- A decimal number is a number that has a decimal point, as; 3.592.
- Decimals are another way of showing fractions
- Decimal numbers when converted into fractions then in the denominator always 10, 100, 1000, come according to the number of digits after the decimal.
- If I have three boxes full of pencils (10 in each) and another half, what would be fraction (let them answer) 3 and half, in decimals what will we call 3.5 (half of 10 is 5)
- Ask students to give one similar example.
- Have 5 o 10 examples from the whole group.
- Plot fractions on number line, they learnt before, help them visualize decimals on number line.
- Let`s do decimal counting:
- With the teacher whole class read counting aloud.
- The whole class does it together, 1, .1, 1.2, 1.3. 1.9, 2.0, 2.1, 2.9, 3.0
- Change the following decimal numbers into fractions.
- Fill in the box with suitable number.
- Note the unit cost of electricity bill at home.
- Ask the per liter cost of petrol (parents)
- Change the following fractions and mixed numbers into decimals.