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Introduction In a kindergarten class, the teacher wants to teach her students the letters of the alphabet. Of course, there are 26 letters in the alphabet. The teacher wants to group the letters based on what they have in common instead of teaching each one separately. She also wants to spend an equal number of […]

Introduction With 32 kids in a French Club, the club sponsor, Mr. Henry, wants to plan a field trip to France. Wow! What a field trip! All 32 kids are going. Mr. Henry must follow the rules for overseas field trips. One of these rules is that there is a ratio of an adult teacher […]

Introduction Remember back in the olden days when a quarter went so much farther. It seems like today you can’t buy anything for 25 cents anymore. However, as a challenge, we are going to see if we can think of some things that might cost five cents. To use the whole quarter and imagine that […]

Whether you are a teacher, exam supervisor, administrator, or lecturer, you might have come across the terms summative assessment and formative assessment. These two concepts are crucial to the assessment of students in any organization or institution. Therefore, it is important for you to understand both of them in greater detail so that you can […]

Twenty-four is a composite number and the first number that satisfies the form 23q where q is a prime number. It is also the third nonagonal number – a figurate number that extends the concept of triangle and square numbers to nonagons. Twenty-four is a significant number because there are 24 hours in a day, […]

Introduction Some mortgages are set for 30 years, and some are set for 15 years. Let’s say that you buy a house and get a 15-year mortgage on the property. However, you prefer to pay it off faster. Every three years, you will increase your monthly payment by $200 based on the fact that you […]

Introduction You just turned 18 years old, and you feel it is time to write a book about your life. Think about how you could divide your life into chapters. How many chapters will you have? You may first want to begin by thinking of the sections of your life. It could be birth, childhood, […]

Introduction Have you ever poured the last drops of the orange juice into your glass from the container only to find that your friends come in demanding that you share it with them? It seems fair because no one likes someone to take the last full glass of orange juice. Your glass holds 16 ounces […]