Translating Word Problems into Equations
The lesson teaches how to translate word sentences into mathematical equations. It covers the use of variables to represent numbers and how to express word problems as algebraic expressions. Students will learn to solve simple equations and check their answers.
- 02:23 “sweets you have data and then you spend it on transport. So you can easily represent this with Z, represent this with D and represent this with S. So for your 500 NARA, this is, to know how much is left every month, say...”
- 19:25 “We've come to the end of today's class. Thank you so much for watching. My name is Dorkas Aoye, till next time.”
- 01:33 “You go by the word one after the other and then you take it easy to interpret them. Suppose you get 500 NARA Pokemon every month and you want to keep track of the money you spend. You know, because you spend money on swe...”
Simplification of Algebraic Expressions
This lesson covers the definition of algebraic expressions and their components, including terms and coefficients. It explains how to identify like terms, perform arithmetic operations on similar terms, and simplify expressions by inserting or removing brackets.
- 19:12 “plus 4 times 2. In other words, 4 groups of 3 plus 2 is the same as 4 groups of 3 plus 4 groups of 2. For example, we expand this expression. 3 into brackets 2a plus b. Now with expansion and the distributive law, this i...”
- 20:00 “multiplied by b. So we have 3 times 2a is 6a, 3 times 2. This expression is the same as 3 times 2 times a. Remember 2a is the same as 2a. So in our algebraic expression, you can multiply all these together. 3 times 2 tim...”
- 20:52 “Like it says here. Multiply 3 by the second term, like I explained earlier, and you get 3b. At the end of the day, you get 6a plus 3b. More examples. You can solve this on your own. I'll just solve just one of it. Expand...”