The homework thread.

[Buzz Rules]

The homework thread. If your child has a question about homework that you can't figure out when they need some help, post the question and subject here. I'm not a teacher but I know there are several teachers of different subjects on the Disboards. I figured this would be a beneficial thread for parents who sometimes struggle to help their child in subjects that might not be their expertise. I hope you all find this thread useful.

 

[Simba's Mom]

If anyone has any math questions (only from arithmetic through algebra and geometry-no calculus!), I'm a former math teacher.

 

[Fely the 1st]

Happy to help with all questions related to the german Language. I‘m from Germany and also a teacher

 

[mjkacmom]

All I can say is thank goodness my husband and 5 kids are great at math (CFP, CPA, finance major, science major, finance/math major with 3 actuarial exams passed, business major, my dad got his undergrad degree in chemical engineering from Princeton, I was an English major who topped out in algebra 2

 

[Buzz Rules]

Giving this thread a bump.

 

[PollyannaMom]

What a great idea!!

I used to be a sub, so I'll take a stab at pretty much any subject, but my degree is in math, and my expertise is early childhood / elementary.

Ask away!

 

[Buzz Rules]

What a great idea!!

I used to be a sub, so I'll take a stab at pretty much any subject, but my degree is in math, and my expertise is early childhood / elementary.

Ask away!

I have a degree in history, so I can help in that area.

 

[jimmymc]

Engineering here, tag me if there's a math or science question.

 

[citruscurtis]

I have a degree in history, so I can help in that area.

So how accurate is Brian kilmeade...... secret six book.
How did England lose the revolution

 

[Buzz Rules]

Bump because in some places the school year is already in progress.

 

[Skippy918]

I’ve already had to help my kiddo with math homework. I had to google because I don’t remember the stuff I learned in high school math.

 

[Buzz Rules]

I’ve already had to help my kiddo with math homework. I had to google because I don’t remember the stuff I learned in high school math.

You're free to ask questions here.

 

[brockash]

Ok...any takers...this 6th grade Geometry is killing me. We got an answer, but it's saying it's wrong. We have to find the area of the shape (by breaking it down into smaller shapes) with the points/distances given.

argh...can't figure out how to put the pics the right side up...sorry.

 

[Simba's Mom]

I'm a retired Geometry teacher, and I'd be interested in attempting this one, but I've already got two problems. I can't read two letters in the picture.
First, following from W, R, H to ? I can't tell what that letter is at the point.
Second, from H is a straight line to ?, the same point that's at the bottom of the sloping line from D. I can't tell what that letter is.

 

[brockash]

I'm a retired Geometry teacher, and I'd be interested in attempting this one, but I've already got two problems. I can't read two letters in the picture.
First, following from W, R, H to ? I can't tell what that letter is at the point.
Second, from H is a straight line to ?, the same point that's at the bottom of the sloping line from D. I can't tell what that letter is.

Thanks...

If looking at the shape from the top (how it's supposed to be turned, not on the pic sorry) going left to right the points are:

T, L
W, R, H, S
D
K

So I think the 1st one you're talking about W,R H to S.

2nd one is H- K

Thx so much for any help!

 

[PollyannaMom]

(blue numbers are from the chart, red are my additions)

I'm assuming here that the angles at R are right angles, and it's just too small to see the little symbol (but is does check out via Pythagorean Theorem with the sides of the triangle I end up getting, so I'm going with it for now.)

Step 1 - Since DT is 36 and DW is 16, WT is 20 (and so is RL).
Step 2 - If WH is 16 and WR is 12, then RH is 4, so the full length of the base of the big triangle (RS) is 48.
Step 3 - Complete the square by drawing a dotted line from D to HK, breaking the 28 into 16+12.

(I double-checked here that the small triangle "works" as a right triangle with 12,16,20 and so does the big one.)

Now you just have 4 separate shapes to calculate the areas of and add them together:
Upper left rectangle (length times width) = 12x20 = 240
Square (same formula) = 16x16 = 256
Small triangle (1/2 base times height) = (12x20)/2 = 120
Large triangle (same formula) = 48x20)/2 = 480

Final total area = 1,096 square centimeters.

 

[brockash]

View attachment 997847 (blue numbers are from the chart, red are my additions)

I'm assuming here that the angles at R are right angles, and it's just too small to see the little symbol (but is does check out via Pythagorean Theorem with the sides of the triangle I end up getting, so I'm going with it for now.)

Step 1 - Since DT is 36 and DW is 16, WT is 20 (and so is RL).
Step 2 - If WH is 16 and WR is 12, then RH is 4, so the full length of the base of the big triangle (RS) is 48.
Step 3 - Complete the square by drawing a dotted line from D to HK, breaking the 28 into 16+12.

(I double-checked here that the small triangle "works" as a right triangle with 12,16,20 and so does the big one.)

Now you just have 4 separate shapes to calculate the areas of and add them together:
Upper left rectangle (length times width) = 12x20 = 240
Square (same formula) = 16x16 = 256
Small triangle (1/2 base times height) = (12x20)/2 = 120
Large triangle (same formula) = 48x20)/2 = 480

Final total area = 1,096 square centimeters.

Thank you sooo much for looking at this and working it. We kept getting 1072, however the teacher said she also got 1072 and the program was wrong (program had answer as 1312). I've just printed this off and will look through it better tonight with dd. I so appreciate you taking the time to do this (I specifically asked her teacher for the steps, but she just said the program must be wrong and she got the same answer as us- no steps/explanation)- I'm starting to wonder if she knows how to do these. - She's a MS teacher and the just changed our math sequence to Geometry before Algebra. so this is the first year she's done Geometry in I'm sure many years.

Seriously, we so appreciate you writing out the steps...we'll have to look tonight to see what we did different.