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From Karnataka Open Educational Resources
→Notes for teachers
===Notes for teachers===
===Notes for teachers===
Activity and lesson 1
[[File:1..png|400px]]<br>[[File:2..png|400px]]<br>
[[File:1..png|500px]]<br>[[File:2..png|500px]]<br>
The students must complete the table like the following:
The students must complete the table like the following:
No of squares| No of match sticks | Write match sticks (as a number expression) | Write algebraically
No of squares| No of match sticks | Write match sticks (as a number expression) | Write algebraically
(we completed this)
(we completed this)
'''Lesson 2'''
'''Practice with generalization
Commutative and distributive properties'''
'''(Part1 - Practice with generalization)'''
*Work with Ex 11.1. Different children can be given different problems. The important thing is they know variables can be in different letters.
*They should also know that different phenomena can be generalized. Mangoes, students, pencils.
*Ask children to talk about (I) did they add (ii) did they multiply?
*For example, when they made “Z” they added three match sticks. When they made 10 “Z” they added 3 +3+3+..... 10 times This is also multiplying by 10. And we simply wrote this as if “n” sticks are needed for a “Z”, then 10n sticks are needed for 10 “Z”. Multiplication is repeated addition.
*Work with the patterns and let children see generalization is not only addition but subtraction and multiplication.
*Check the following document for Shapes patterns students to understand patterns more.
'''(Part 2 - Commutative and distributive properties)'''
*Give students simple addition (with carry forward).
*In a group students add in different order and verify
*They should multiply in different order and verify
*Also do the distributive property like this <br>
Go back to the number of squares and triangles and activities and introduce Expressions.<br>
Give Ex-11.2 different problems as homework/ classwork practice problems.<br>
===Activity No # ===
===Activity No # ===
