Maths

Heres a scanned page from my maths book from this term. It shows what I was learning and that I repeat the wrong ones until I get them right. This work was about ratios and some about dividing fractions.

After I had marked them and repeated what I got wrong I wrote a summary of what I learned.

Week 8 Term 2

This week I finished my science fair, which I did about which substance melts ice the fastest out of salt, sugar, baking soda and no substance. In my hypothesis I thought that the salt would melt the ice fastest because of the research I did. I was right, the salt melted the ice fastest, the ice cube with no substance was last. Sugar and baking soda were quite even in the middle.

In maths this week I learned about expressing one quantity as a percentage of another. To express as a percentage, example- 332 books were sold out of 500 printed. 332/500 so 332%500 = 0.664, then to make into a percentage, multiply by 100 = 66.4%. If the question is like express the first number as a percentage of another- example 3, 4 then the second number (4) need to be made into 100. 4 x 25 = 100 then multiply the first number (3) by 25. 3 x 25 = 75 so it’s 75/100, as a percentage, 75%.

In writing, our class is starting to prepare for speeches next term so we’re writing draft arguments. The first one was about whether school uniforms should be voluntary or compulsory. I’ve just started to write the introduction about the next one, whether school canteens should only have healthy food in them to help prevent obesity.

In English, I’ve finished the comprehension work from a story called ‘Seize the moment.’

In fabric tech arts, I’ve finished my jersey (yay!) and now I’ve cut the pattern for  some slipper/ug boots made of polar fleece. I hope to finish them on time before we start the next tech art cycle.

My goals for next week are to:

Finish my maths work about increasing and decreasing percentages and have a good understanding of it.

Start sewing my slippers in fabric.

To be up to date with my English and writing work that I need to be.

Science Fair

This is my Science Fair board

For my Science Fair project, my question was ‘How do different substances affect the melting time of ice?’ I wanted to find out which substance melted ice the fastest. I tested three different substances, salt, sugar and baking soda and also a control, which is with no substance. I measured 1/2 a teaspoon of each substance and poured one on each of the four frozen ice cubes. Then I waited to see which one melted the ice the fastest. My results show that the salt melted the ice fastest, the sugar and baking soda were quite even, coming next and the control ice, with no substance, came last. My hypothesis was right because I guessed that the salt would melt the ice fastest because I found out that ice on roads is sometimes melted by different types of ice. I wanted to see if normal table salt melted ice quick as well. It was correct.

Week 7 Term 2

This week in maths I have learned about dividing fractions, ratios and now I’m working on converting fractions and decimals to percentages. To divide fractions, make the reciprocal of the divisor and make it  multiplication instead of division. This means turn the second fraction around, example 4/5 divided by 2/3 turn 2/3 to 3/2 so it’s 4/5  x  3/2. Then multiply 4 x 3 = 12 and 5 x 2 = 10 so it’s 12/10. I learned about ratios, ratios are like saying 20 to 31. it’s written like 20:31, to turn a ratio into a fraction, just go 20/31.

In writing this week I have finished my report about the weta. First I went through the information sheet and highlighted the facts that I wanted to put in my report, then wrote them down on the not taking sheet. Then, using just the note taking sheet, I wrote my report.

Also I’ve started on an English task that I had to read an exert of a story and answer some questions about it. I haven’t finished that yet though.

In tech arts, we’re doing sewing at the moment, I’ve cut out all my fabric and sewed my pattern on (which says ‘Soph’ and has a love heart under it),  sewed the shoulders together and pinned the hood. Next week I will continue sewing my jersey.

On Friday I am going, along with some other Jump Jam leaders, to Morrinsville to perform Jump Jam in front of some other students. The big group of Jump Jam leaders is split into 5 groups. I’m in group 4 and the song we’re doing is called ‘Gonna make you sweat’ It’s fun but tiring and a bit hard to remember all the moves.

My Goals for next week are

• To have sewed some more on my jersey in fabric, tech arts.
• To have finished all my maths and be up to date with what needs to be done.
• To have finished my English work on time.