Math 10 Core Competencies
categories: Self-Assessment
October 2023 archive
Week 7 Blog post – Polynomial operations
categories: Math 10
this week I was introduced to polynomial operations
for this question we were trying to finch area of the shaded shape. It is easier to find id we find all the possible rectangles first. After that is done we replace all the necessary X’s for 2.4 ( that is what this question asks for) after you have calculated all the equations and expressions with the replaced x and filled in all the new lines, you can begin to find the area. after all these steps it should look something like this.
Notice how we have to rectangles where we originally were looking for the area 8.4×0.4 and 2.4×5
A of 8.4 x 0.4= 3.36
A of .4 x 5 = 12
12 + 3.36 = 15.36
Chemistry core competencies – acids and bases
categories: Science 10
In Chemistry, I learned about acids and bases and hoe they react with pH indicators. For example acids, such as vinegar and lemon juice turn blue litmus paper red. Bases such as oven cleaner turn red litmus paper blue. Because the paper reacts to the pH of the solution. You can also tell if a pH indicator is acidic or basic using the pH scale anywhere below level 7 is acidic and anywhere above 7 is basic. Level 7 itself is neutral/ pure water. we had to determine if a solution was acidic or basic based on its color change. I used my critical thinking skills to see how much and what color the substance to determine if the substance is acidic or basic.
Week 6 blog post –
categories: Math 10
This week we reviewed grade 9 polynomials, how to sort by like terms, and using algebra tiles for a visual representation.
Somethings that were new to me were some of the vocabulary we learned. For instance, I didn’t know about the different types of degree. You can classify a polynomial expression based on it’s degree.
constant = degree of 0
linear = degree of 1.
quadric = degree of 2
cubic = degree of 3
quatric = degree of 4
quintic = degree of 5
Week 5 Blog post – Trig equations
categories: Math 10
This week we did a ton of solving trig equations, but now we’ve started to put them into words.
for example:
A mine shaft which slopes at an angle of 19 degrees to the horizontal is driven into a hillside for 400m. how much lower, to the nearest metre, is the end of the shaft than the beginning.
the shaft is 130m lower than the beginning.
Week 4 Blog Post – right triangles
categories: Math 10
This week we recaped what we already new about triangles. We revised the pythagorean theorom ( a x a + b x b = c x c ). we talked about different types of triangles,
obtuse = over 90 degrees, acute = under 90 degrees, right = 90 degrees
we also learned how to label a right triangle for a trigonometry question. The longest side, and the side directly across from the right angle is the Hypotenuse or H. There may or may not be a given angle. If there is, The side piece directly across from it will be called the Opposite or O. And whatever side is left, is called the Adjacent or A. Wherever the hints on your paper give you can use to find your trig equation, hence SOH CAH TOA
S= O/H C= A/H. T= O/A
Sine. Cosine. Tangent <——– These are what you use to write out your equation to find the missing pieces of your triangle.