Month: October 2023

Measuring the circumference and Investigating Pi

For this measurement activity we used a long string to measure the circumfrence. The circumference is the outer part of the circle that is formed with an infinite amount of dots. Then we measured the diameter, which is a line that crosses through the circle. Both measurements of the circumference and diameter were divided together and most of them were just over the number 3 as a value. The result is called pi.  The objects we received were of different sizes and cylinder shaped (from glue stick to bucket).

Adding and subtracting fractions

WALT: (we are learning to) Add and subtract fractions with  different denominators. For example 2/8 + 7/24. Find the factors of the denominators. 8, 16, 24. 24. There are two 24s so we transform them into our new denominators. ?/24 + ?/24. For the first one, it was once 2/8. The question mark in 8x?=24 is the number you multiply 2/8 by. 3 x 8=24 and 2 x 3=6. It is now 6/24. For the fraction that was 7/24, the question mark in  24 x ?=24 would be the answer. Which is the number 1. The fraction 7/24 remains the same because it is multiplied by one. 6/24 + 7/24 would be 13/24 because you should leave the denominators alone.

For subtracting fractions we do the same thing but subtract the numerators at the end. E.g, 2/8-1/8 would be 1/8.

Combination probability

This is a question with lots of probabilities of a person bringing a pen, a pencil, and a highlighter and could bring any type of colour pen, pencil, or highlighter. The list above shows all the 24 possibilities. Although a tree diagram would have been more clearer, the list still shows it well.

Multiplication in parts for large numbers

This is a maths strategy that requires all  of your times tables to be known. For example, 4 x 243. Place value is also needed so you split 243 into 200+40+3. Then you make 4 groups of 200+40+3 because you are multiplying by that number. 4 x 3= 12, so you cross out the 3 in your groups. 4 x 40 is 160, so cross out all the 40s. 4 x 200 is 800, so cross out the 200s. Add 12+160+800 together, and you get 972. 4 x 243= 972.

Parts of speech

Many parts of speech exist in the English language. Adverbs, conjunctions, prepositions, interjections, nouns, and verbs are some to name a few. If you don’t know what some of them are, an adverb describes a verb or an adjective, like for example, slowly walking. A conjunction is a word that connects parts of sentences. ‘And’ is a conjunction. Prepositions tell what time, location, direction an object is. ‘The cat is beside the girl.’ A noun is the name of an object, place, date, or person. A verb is an action word that describes what something is doing.

Probability math- Greedy pig

Greedy pig is a game of chance. You keep rolling a die to add to the number 50. If you roll one, your score or sum will revert back to zero. You will be a ‘greedy pig’ if that happens. If the other numbers are rolled, they will only be added towards your score. you keep rolling a die to add to the number 50. This is one of the games I played today, and I successfully reached the score of 50.

IXL-Stem and leaf graph

A stem and leaf plot is a different type of graph. The stem part symbolises the tens place while the leaf is the ones place. We will look at the row that says ‘2 0 5’. This does not mean it is showing the number 205, it is showing 20 and 25.  The stem part with the 2 on it is like a preset for a tens place so numbers from 0-9 can be placed as a ones digit. To read a stem and leaf plot you read the number on the stem and one number on the leaf. Two five. ‘Two five” is basically twenty-five.

Suffixes and prefixes

A prefix is an addition that comes with a word. The prefix comes before the word, because pre- means before. For example, a prefix is the word pre-. Pre-school, pre-diabetes, preliminary. The prefix/suffix must have a root word to stick to. If you do a word like con, the word con means a fraud. But the root word is n, and n is only a letter. Words like co-pilot will be better. A suffix is a word that comes with the end of a root word. An example of a suffix is -ful. Wonderful, Teaspoonful, and grateful all have the suffix -ful.