Math CC Self-Assessment

I learned many concepts this year in math, and I am confident in saying that I am ready for Math 10. I am proud of where I ended this term. I think an area I need to work is to not procrastinate, and not push my homework and project till the last minute. I am most proud of my algebra unit, because I strongly feel like I understood all that was being taught to me. I can gather, select, evaluate, and synthesize information. This statement applies to me because I am good at collecting information from notes or homework.  I can consider alternative approaches and make strategic choices. I think this statement also works for me because I can easily adapt to what has been given to me.

Unit 6 Summary Assignment

In this unit of math, we learned many things. I learned how to isolate the variable, write and solve algebra equations, graph on number lines, and how to solve decimal and fraction equations. For my assignment, I will be showing how to graph an inequality on the number line.

example: x ≥ 2

Step 1: Find out what the signs are saying. In this case, the equation is saying that x is greater than, or equal to 2. So the options are 2,3,4,5,6, through infinity.

Step 2: Find whether the dot should be opened or closed. Closed means  that it includes the value, and open means that it is greater then the value. In our equation, our dot is going to be closed.

Step 3:  Figure out which way the arrow is going to be facing on the graph. Our equation is increasing, so the arrow is going to be going to the right.

Step 4: Place the equation on the graph, I will demonstrate down below.

 

Unit 2 Summary Assignment

In our second unit of math, we covered many topics. We learned how to find square roots, determine the length, width, areas, etc of squares, and how to estimate the square root of a irrational number. We also learned what the Pythagorean Theorem is, and how to square root fractions, decimals, positive, and negative numbers. We leaned how to write in exponential form, and how to simplify equations. Lastly, how to add and subtract  exponents. For my assignment, I will be focusing on estimating the square root of an irrational step by step.

Number: √30.

Step 1:

Find whether the number is rational or irrational (rational: stops or has a pattern, irrational: repeating but doesn’t have a pattern). In this case, this number is irrational.

Step 2:

See which 2 square roots 30 falls in between. It is 5 and 6, becuase the Square root of five is 25 and square root of six is 36. 30 is in between 25 and 36.

Step 3:

Seeing which rational number it is closer to. 30 is almost in the middle of 25 and 36 but it is a little bit closer to 25 which means the number is going to be smaller than 5.5.

Step 4:

Lastly, choose a decimal that would fit with this equation, I would choose 5.4. So, √30 is around 5.4

Harder equation:

Unit 1 Summary Assignment

In our first unit of math, we covered many topics. We worked with multiplying, dividing, adding, and subtracting fractions. As well as converting a mixed fraction to improper, and how to make a decimal a fraction. We also learned how to place numbers and equations on the number line, and what real, rational, integers, whole numbers, and natural numbers are. For my summary, I will be focusing on adding fractions, and converting it from improper to mixed.

There are a few steps with adding fractions, which will be written down below with an example.

3/4 + 1/3

Step 1: The first step is finding the common denominator. Do do this, we need to find multiples of 3 and 4, and see what multiple they have in common. If the denominator is ever the lowest common multiple already, then you don’t need to do anything to that fraction (I will give and example on paper).

4,8,12,16

3,6,9,12

As you can see, 12 is the number they both have in common

Step 2: Now, we change the denominator to 12. To get 4 to 12, we have to multiply 4×3, so whatever we do to the denominator, you always have to do to the numerator, which means multiplying 3×3, so our new fraction is 9/12. Do that to the second fraction as well, making it 4/12.

Step 3: now, we can add the two numerators together, so 9/12 + 4/12 = 13/12

Step 4: The final step is to convert it into a mixed fraction. Firstly, you see how many times 12 goes into 13 (1x), which gives the whole number, and then you see how many remains (1). With this information, all you have to do is  keep the denominator 12, and you are left with 1 1/12.

So, 3/4 + 1/3 = 1 1/12.

HCE Assignment

 

Stolen Culture

Your culture being ripped from your hands
Voiceless and paralyzed, with no control

Your clothing being taken away
Forced into foreign garments, a thousand needles puncturing your skin with holes

Once long and luscious hair
Chopped to shoulder length, leaving you naked and afraid

Your stories and language that have been passed on through generations
Now being broken through assimilation, creating dismay

Your identity was stolen
And for this we will be forever sorry, forever regretting taking your ethnicity away

-Julia Thirsk

 

Currents from the Kitchen

Pre-lab

Purpose: Which fruit will produce the most electric voltage?

Hypothesis: When I connect the wires to the voltmeter, the lemon will produce the brightest light.

Materials: 1 voltmeter, 2 wires, 1 nail, 1 copper strip, at least 3 fruits/vegetables

Procedure: Stick the copper and nail into fruit, connect wires to copper and nails, connect voltmeter to end of wires.

Reasoning: I think the lemon will produce the brightest light because the acid in the lemon will affect the electric charge running through the wires.

Close-up Photo of Sliced Yellow Lemon on White Surface

image from Pexels

Lab

Lemon- 6V  Potato-4V    Mango-6V

I observed that when we would wiggle the copper or nail, the charge on the voltmeter would adjust. My hypothesis was correct, but it was actually lemon and mango that had the highest voltage.

What is causing the electrons to flow in this experiment?

Multiple things are helping cause the electrons to flow, because it is a complete circuit. So, the copper, nail, and fruit are acting as the battery, and the wires are helping move the electricity from the fruit, nail, and copper, into the voltmeter, and then back to the fruit, completing the circuit.

What are the independent, dependent, and controlled variables in this experiment? 

independent- fruit   dependent- voltage power   Controlled variable-  size of the fruit, and the type of wires

How can we modify our experiment to improve our results?

We could try using a different type of metal instead of copper, such as Nickle, aluminum foil, etc.

What could be sources of error or uncertainty in our experiment?

When we were recording our answers, each time we could stick the copper and nail into the various fruits, a lot of juice would come out, so maybe this was effecting our results. In the future, we could try to cut a new piece of fruit every time we want to stick the nail and copper back in.

How can I use this in my everyday life? 

Fruit is significantly cheaper than betters, and much better for the environment. Did you know it takes about 100 years for a battery to fully decompose?! So, I could try to convince people to move towards a more eco-friendly way to power things.

Fictional Safety Story

Dangerous story-

We had just completed a science test yesterday, but some students hadn’t finished it yet. Ms. Cass had told us that she was going to watch over the students who were finishing their tests, while the rest of the class went into the lab room. There were about 9 of us in the lab room, and we didn’t really have much to do, so we decided to take a look around. as we walked around the classroom, we started noticing signs on bottle and things that said “corrosive” or “explosive” or even “toxic”! Ms. Cass had never explained to us the dangers, and most of the 9 kids in the lab were slackers, and students who didn’t like rules. I also noticed safety glasses (protect your eyes), test tubes (hold substances), and beakers(used to measure liquid volumes), but I payed no attention to them. Stacey thought it would be funny to pick up one of the glass bottles that had a WHMIS sign on it (not realizing that it was the flammable one), and toss it across the room to Markus. Markus couldn’t quite catch it in time, and the entire bottle of gasoline spilt onto the floor. All  of the students just laughed it off, and continued to look around the classroom. Stacey then found a torch and turned it on, she then proceeded to run around the class with it, pointing it at people. She accidentally tripped on a chair that had been left open, and dropped the torch. The next thing I saw was the room go up in flames. When Stacey dropped the torch, the flame had just skimmed the corner of the gasoline on the floor, and lit the room on fire. Everything was burning, after the the wave of shock had hit people, reality set in, and it was hysteria. Everyone was crazy and after the Ms. Cass came running in, put the fire out, and made sure we were okay, she said that she need to talk to us. She sat us down and immediately asked us who had done this. I was speechless, I was not sure if I should tattle on Stacey (even though that was the right thing to do), because that would ruin our friendship. In the other hand, if I didn’t say anything, Stacey and I would still be friends, but we would all be in really big trouble. After I went over this for a couple minutes, I decided to fess up and tell her that it was Stacey, and I knew that was the right thing to do. We didn’t get in as much trouble as we thought we would, but we knew we would never forget this day!

 

Safe story- 

We were in the lab one day, and Mr. Smith was watching us. We were doing a lab about candles, so there was open flame. We were in groups of 4, and it was off to a very good start. we used our beaker tongs (used to pick up hot beakers) because we had accidentally left our beaker next to our flame, and it had heated up. We had all turned our backs on the flame, even though Mr. Smith had told us to never do that. The wax of the tall candle had melted, causing the candle to fall over, and our lab papers went up in flames! The whole class of 30 turned their eyes to our group, we all just watched the fire start. Mr. Smith immediately noticed out lack of attention to our own projects, and we saw his eyes graze over to the fire. He quickly told us to back away from the flames, and grabbed the fire extinguisher. He pointed it at the fire and we watched the white foam fall on the fire, putting it out right away. He wasn’t mad at any of us, but we did talk about lab safety for the next 2 weeks! After the fire, Mr. Smith made us wash all of our equipment, including the petri dish (which we had used to put our candle in). We had all learned our mistakes from this experience, and it definitely won’t happen again!

Reproduction Comparison Post

Similarities between meiosis and mitosis:     

  • Both create new cells as the final product
  • Both se PMAT
  • Both start with one single cell
  • Both happen in some plants and animals

Differences between meiosis and mitosis:

  • Mitosis has one stage of PMAT,
  • Meiosis has two stages of PMAT
  • Meiosis has “crossing over”
  • Meiosis has homologous chromosomes
  • Mitosis is asexual reproduction
  • Meiosis involves sexual reproduction

Pros of asexual and sexual reproduction:

  • (a)don’t need to go out and find a mate
  • (a)the population can grow rapidly
  • (a)don’t need to wait around and take time to find a mate
  • (s)every organism is going to be unique and have there own identity
  • (s)reduces the risk of getting wiped out/eliminated
  • (s) the species will survive better in the outdoors, because they will all have there own separate strengths

Cons of asexual and sexual reproduction:

  • (a)predator/disease can easily wipe out the population, because they are all the same
  • (a)if the organism had a defect, every offspring would too
  • (a)there is no way to have any variation between the species, so it will always just be one thing and will never be able to move/change
  • (s)offspring is not guaranteed (there might be problems with the birth, pregnancy, etc)
  • (s)takes longer to reproduce, so the rate of population is slower
  • (s)the strengths of the parents aren’t guaranteed to pass on to the offspring

How asexual and sexual reproduction compare:

  • both create new offspring
  • use mitosis and meiosis (DNA) to reproduce

 

 

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