powerpoint excite revise
TRANSCRIPT
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Lesson Plan in Math IVLesson Plan in Math IV
Objectives: Objectives:Add 2 to 3 digit numbers Add 2 to 3 digit numbers
with sums up to 300 mentally with sums up to 300 mentally
*Answer why questions*Answer why questions
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1. Drill
Game on basic addition
facts using flashcard
[Relay game by pairs]
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2. Review Estimate the sum of item orally
312 143 163 192 676 +291 +414 +681 +215 +342
780 816 136 376 762
+415 +861 +213 +134 +234
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3. Motivation3. Motivation
Are trees and other Are trees and other plants important to us? plants important to us? Why? What do trees and Why? What do trees and other plants give us? other plants give us?
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1. Presentation In an orchard, there are 125 avocados, 175 mango and santol trees. How many trees are there in all?
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Let us help the dog go up and down the stairs by adding the equations mentally as fast as you can. 136+174
=111+189 =
196 + 114 =100 +200
=140 +140 =
12 4+186 =152+148
=168+142 =
165+123 =
116 +190 =137+163
=141+159 =
129+170 =
134 +168=
190 +110 =
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3. Generalization What is the fastest way in solving for the sum mentally? Recall once again the steps.
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C. Application Add the following numbers mentally.
62 275 153 150 155 +248 +143 +137 +150 +145
198 189 1167 123 265 +102 +110 + 133 +175 +134
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Evaluation: Solve the following numbers in your illustration board.
1. 136 3. 241 +174 + 59
2. 213 4. 178 +187 + 121
5. 158 +143
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IV. Assignment Find the sum by adding mentally on page 134 Activity A.
Write the answers in your notebook.