1. Lesson Plan in Math IV
Objectives:
Add 2 to 3 digit numbers with sums up to 300
mentally
*Answer why questions

2. 1 . Drill
 Game on basic
addition
 facts using
flashcard
 [Relay game by
pairs]

3.  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

4. 3. Motivation
Are trees and other
plants important to us?
Why? What do trees and
other plants give us?

5. 1. Presentation

In an orchard, there
are 125 avocados, 175
mango and santol
trees. How many trees
are there in all?


6.  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
= =
140 +140 100 +200 12 4+186
= = =
168+142 152+148 165+123 116 +190
= = = =
141+159 137+163 129+170 134 190 +110
= = = +168= =

7.  3. Generalization

What is the
fastest way in
solving for the sum
mentally? Recall
once again the
steps.

8.  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

9. Evaluation: Solve the following numbers in
 your illustration board.
 1. 136 3. 241
 +174 + 59
 2. 213 4. 178
 +187 + 121
5. 158
 +143

10.  IV. Assignment

Find the sum by
adding mentally on
page 134 Activity A.
 Write the
answers in your
notebook.