1,122
edits
Changes
Jump to navigation
Jump to search
Line 78:
Line 78: − + + + + + + + + + + + + + + +
Algebraic Expressions (view source)
Revision as of 10:07, 11 November 2019
, 10:07, 11 November 2019no edit summary
* '''Question Corner'''
* '''Question Corner'''
== Concept 1 : Generalization; and stating in algebraic terms ==
== Concept 2: Generalization; and stating in algebraic terms ==
[[File:algebra1.png|400px]]
[[File:algebra1.png|400px]]
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
=== Algebraic variables can be “x” or “y” or “a” of “b” ===
# Practice with generalization
# Commutative and distributive properties
# Work with Ex 11.1 (from the textbook referred). 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.
== Concept 3: Combining algebraic terms – commutative and distributive properties ==
== Concept 3: Combining algebraic terms – commutative and distributive properties ==