Letter Writing: Informal and Formal
This lesson covers the types and formats of letters, focusing on informal and formal letters. Students will learn how to write different types of letters for various situations.
- 00:02 “Good day students. My name is Modupe Kalejaye I will take you English language. On the aspect of writing, we want to look at later writing. I'll be concentrating on informal and formal later. Now can you look at this? I'...”
- 03:49 “If you write to the governor, you are writing to the governor of legal states, not Sawardu. So that's why it is strictly in-- I mean, it is strictly formal. So for example, you want to write to the ex-minister. You don't...”
- 01:33 “two people at separate points or distance. And writer will express our mind, thoughts, and intention in a written form to a person who is expected to list them by the way of reading the letter. Now, you are in Nigeria. Y...”
Introduction to Sets
This lesson defines a set and explains set notation. It covers types of sets, cardinality, and set operations. Venn diagrams are also introduced for solving real-life problems.
- 00:52 “and h, e, c. Why small letters are used to denote an element of a set? So let's define what the element of a set is. These are the elements or members of a set given and also the element are separated using commas and en...”
- 04:09 “and that is all the days of the week. Many that I will use the first letter to denote that M, which is the Monday, start from Monday. We have Tuesday, T, we have Wednesday, W, we have Thursday, T, H, we have Friday, F, w...”
- 00:00 “Good day, my name is Afeez. I will be your further maths teacher for today. This topic is sets. At the end of this topic, a learner should be able to know the idea of a set, set notations, applications, disjoint sets, an...”
Clerical Staff Duties and Qualities
This lesson covers the definition of clerical staff and their main duties, including handling documents and telephone calls. It also discusses the personal and job qualities required for effective clerical work.
- 05:31 “any modern official machine that are available. Okay, she has to be also obedient to instructions given to him or her. All right, then the personal quality of a clerical stuff is being friendly and polite. Being friendly...”
- 09:25 “One of the important qualities of any clerical stuff is ability to keep official information brought to his attention in the office confidential, ability to keep the secret of the organization. All right, then in our off...”
- 07:50 “to some of the work given to her, right? So let us look at those qualities, job qualities. One is punctuality again. She has to be to the office on time. Loyalty to the boss. Confidentiality, meaning ability to keep secr...”
Chemical Symbols and Formulae
The lesson covers the symbols of the first 20 elements and how to write chemical formulae and equations. It explains the differences between elements, compounds, and mixtures, as well as the concept of radicals and valency. The laws of conservation of mass and constant composition are also discussed
- 00:46 “sulfur, we use the phase letter S and some other examples like that. Combination of the phase, the next is, convolution of the phase letter, written in capital and one other letter from the name of the element, written i...”
- 00:00 “Good day everyone, my name is Adekunle, I am teaching you chemistry and the topic we have now is chemical symbols, formulae and equation. Chemical symbols, formulae and equation. What are chemical symbols? The symbol of...”
- 02:30 “containing radicals. For example, calcium triosonitroid 5 contains two radicals of NO3. We have NON3 which is named sodium triosonitroid 5. It contains one radical and then we have ion3 hydrozyme. It contains three radic...”