LESSON PLANNING OF BRACKETS & DECIMALS

Subject Mathematics

Grade 5^{th}

Students` Learning Outcomes

- Simply decimal expressions involving brackets
- Applying one or more basic operations

Information for Teachers

- The simplification of the decimal expression is done according to BOD-MAS rule.

- Solve inside the Brackets/parenthesis before of, Multiply, Divide, Add or Subtract.
- Solve the orders. (Not applicable here)
- Divide and multiply in the sequence.
- Add and subtract accordingly.
- For example:

- If there is more than one bracket then follow the following pattern:

o First solve the inner most i.e. round brackets parenthesis (……).

o At the end solve the values given outside the square brackets. {……}

o Then open the square brackets box brackets […..].

o For example:

- Consult the textbook where and when applicable.

Material / Resources

Writing board, chalk/marker, duster, textbook

Introduction

- Write BOD-MAS on the board.
- Ask, ‘do you know anything about it?’
- Draw different types of brackets on the board, i.e. ( ), { }, [ ]
- Ask them to tell the names.
- Write their feedback on the board in front of the bracket.
- Ask, ‘do you know the rule of solving these brackets? (May be some students will be able to tell the right sequence)
- Encourage them for the correct answer.
- Explain BOD-MAS on the board (as is told in information for teachers)
- Solve one question with whole numbers on the board involving brackets.
- For example:

- Tell them that today we will solve the brackets of decimal numbers.

Development

Activity 1

- Ask, ‘who will tell me what ‘BOD-MAS’?
- Write a decimal equation, involving brackets, on the board.
- Revise the place value of different digits in a decimal number.
- Remind them ‘how important is it to place a decimal at the correct place for getting the correct answer.
- Invite a group of four to five students to solve the equation on the board. (Keep a check that every group member will get a chance to solve one step while the peers help him.
- Give one chance to every group by writing different equations.
- Reinforce that today we will solve decimal equations involving different brackets.

Activity 2

- Give few decimal equations with a little complication to solve in pairs. For example:

- Give at least five/six questions.
- While the pairs are doing the work take a round in order to see if they need any help.

Activity 3

- Give 2 questions from textbook to solve.
- Take a round and help them accordingly.
- Ask them to swap their copies in pairs for cross checking. .
- Give more questions from the textbook to solve in copies. Collect the copies to check the work afterwards.

Sum up / Conclusion

- In order to solve the brackets follow the given rules:
- Use the ‘BOD-MAS’ rule

- Solve the brackets in the sequence of ( ), { } and [ ].
- Place the decimal in the answer at the right place exactly under the decimal placed in the question.

Assessment

- Give some questions from the textbook to solve.
- Fill in the boxes with correct operations (+ – ÷) to get the required answer:

Follow up

- Ask students to change the following word problems in equations and then solve them.