Graphical Method of Simultaneous Linear Equations
This lesson teaches how to solve simultaneous linear equations using the graphical method. Students will learn to create a table of values, plot the equations on a graph, and identify the point of intersection as the solution. The focus is on using the x and y axes correctly.
- 00:00 “Hello, my name is Oyase Ose Sunday. I'm taking a maths JSS-3 class, but we have an interest in topic for today. The topic says simultaneous linear equations, we'll be looking at the graphical method of simultaneous linea...”
- 14:34 “positive of x. This is my negative of x. This up is my positive of y. Down minutes is my negative of y. So, it means, if I am going to be doing my plotting, my x is 1, 2, 3, 4. So, what will I just simply do on the graph...”
- 13:48 “Values for y here is minus 2, minus 1, 0, and 1, minus 2, minus 1, 0, and 1. So that means on my y axis, I am going to have this now. You pick up your graph, you pick up your graph, and you say, oh, if this is my graph,...”
Introduction to Trigonometry
This lesson covers the basic concepts of trigonometry, including the measurement of angles and the definition of trigonometric functions. It explains the types of angles, the use of protractors for measuring angles, and the concept of quadrants in relation to angles. The lesson also introduces plane
- 03:56 “as what's called the radius. So we have this. This is the center. From here to here is radius. From here to here is radius. Radius, radius, radius, radius, up to infinity time. So there's a constant distance from the cen...”
- 02:20 “from one position to another about the fixed point on it. So we look at the term intercession of two lines. Let's call this line two and line one. When the two of them intersect at points o, they form an angle. This angl...”
- 03:09 “it becomes a positive angle. And if it lies below the x-axis, such as the following, it becomes a negative angle. So the reference point is the x-axis. The x-axis is the reference line or reference plane when we are meas...”
Cost of Production
This lesson covers the concept of cost in economics, focusing on the cost of production. It explains different types of costs, such as fixed and variable costs, and discusses the factors of production that contribute to overall costs.
- 12:54 “So this is how you draw the graph, it's very simple, first cost is set to be worth, it's set to be horizontal to the x-axis, are we together, it's not more than that, okay? Then let's move to the next one, please, and th...”
- 16:53 “is equal to fixed cost, plus variable cost, take note of that, then how do I do the graph, very easy, draw your x and y, exist, remember this is your worth, your fixed cost, right, this is fixed cost, can you see, then y...”
- 21:02 “draw your x and y axis, then you draw this, this represents your words, your average cost, anytime, anything, are we together, then the next thing I'm going to show you is what is that your average total cost is divided...”
Plane Figures and Their Properties
This lesson covers the identification and properties of various plane figures such as squares, rectangles, triangles, and circles. It explains how to calculate the area and perimeter of these shapes. The lesson also includes the classification of triangles their sides.
- 04:43 “A socialist triangle is a triangle with two equal sides and equal base angles. Two sides of an isosceles triangle are equal. The third side is not of the same angle or the same length as the remaining two sides. Two side...”
- 02:47 “Identifying plane shapes. Properties of a rectangle. The opposite sides are equal and parallel. It has equal angles. Each angle at 90 degrees. For a rectangle, each angle is at 90 degrees. This is 90 degrees, 90, 90, and...”
- 03:48 “All angles are equal. Each angle is 90 degrees, just like in the case of a rectangle. The diagonal lines bisect each other at the right angle, 90 degrees, and it has four lines of symmetry. Triangle classification accord...”
Magnetic Fields
This lesson covers the concept of magnetic fields, including types of magnets such as bar magnets. It explains the flow of magnetic forces from the North pole to the South pole and the principles of attraction and repulsion between magnets. The lesson also touches on how to create a magnet and the c
- 36:13 “And sin 30 is what's sin 30 is equal to 0.5 or 1 over 2. Then, graph f is equal to 10 more than 7.2 times teris per minus 10 times 0.5. Now, let's make use of the calculator. We have 107.2 times 0.5.”
- 35:24 “So, you can use your calculator to get sin 80 that you multiply everything to get the answer in new thing. Now, let's look at the second question which is b, b parts. The same thing is applicable. Let's start from this p...”
- 29:27 “Then I will bring it back to this place and say that what, that our force, which is equal towards q, v, b, times 1, which gives us f is equal to q, v, b. Now, we can make use of this when we are not giving the angle, or...”