# BRACKETS & DECIMALS

LESSON PLANNING OF BRACKETS & DECIMALS

Subject Mathematics

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.
• 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.
• 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: