Counting in Binary
This lesson teaches how to count using the binary system, which uses only the digits zero and one. Students will learn to represent numbers in base two and understand the place values associated with binary digits. Activities include grouping counters to illustrate binary numbers.
- 02:33 “We use this paper abacost to improvise. I don't know if you've seen an abacost in real life. We have 8, fours, twos, then units. Okay, then we have one here, nothing here, one here, one here. I would like us to do this t...”
- 04:06 “For example, let me use stick like maybe a stick. Let's count out nine. I want to do this together. You can do that on your own end. Three, four, five, six, seven, eight, nine. These are nine counters. Now we have to gro...”
- 03:19 “A paper abacost you can draw this on your paper. If you don't have an abacost available with you, you can improvise by drawing this in our notebook. We have 8, 4, 2, and units. So when you make this on your paper, we cou...”
Addition of Binary Numbers
This lesson teaches how to add two or three-digit binary numbers. It covers the basic rules of binary addition, including carrying over when the sum exceeds one. Several examples are provided to illustrate the process.
- 02:30 “one, zero, one, one, one, one, one, so we have one, zero, one, one, one, one, one, one, one, one plus one is one and zero plus one, this, right one, take one to the next column, one plus one is what, ten, that's one and...”
- 03:15 “So we have, we have done this one plus one, this is one and zero, plus one, this, plus one. How do you do this? One plus one is ten already, then take one here, one plus one and under what, another ten. So we have it on...”
- 04:05 “in our previous class, that our binary numbers are only two digits, one and zero. So that's as our answer for that. So three, we asked to add up one, zero, one, and one, one, zero. So we have one, zero, one, one, one, ze...”
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.
- 04:44 “you're lent to hard or subtract objects, you lent that, for example, one apple plus one apple plus one apple plus one apple can be written as four apples. That is one apple, one apple plus another one. Let me represent i...”
- 05:34 “You can as well be, for example, for four apples. Instead of just one plus one plus one, you can still say four times one apple. It is the same thing. It gives you the same four apples. So that means, apple in four place...”
- 10:21 “So we can easily note which ones are the coefficients. For the variable x, the coefficient is three. For variable y, the coefficient here is plus five. And then we have constant of minus nine. x and y are the variables a...”
Public Sector Accounting: Revenue and Expenditure
This lesson covers sources of government revenue and explains terms related to public sector accounting. It classifies expenditures into capital and recurrent categories and provides examples for preparing statements of revenue and expenditure.
- 06:32 “of boroughs. The value is 2.9 million nirah. Purchase of Motoka, 920,000 nirah. Purchase of ambulance, 1,134,500 nirah. Purchase of incubators, 1,233,000 nirah. Purchase of beds, 1425,000 nirah. Purchase of furniture, 67...”
- 02:28 “3,250,000 Nira, purchase of beds, 425,000 Nira, repairs of motocas, 26,000 Nira, transport, 1,23,000 Nira, purchase of furniture, 67,000 Nira. You are required to prepare statements of capital expenditure and recurrence...”
- 08:59 “Income. Federal Government allocation, 20 million nirah. Financial Disposed of 1 million nirah. School fees, 3.5 million nirah. Registration of private schools, 4.7 million nirah, rent from properties, 300,500 nirah. Int...”