Jump to content

All Activity

This stream auto-updates     

  1. Last week
  2. CindyA

    Extra practice Grade 6 US Edition

    I know I'm late to the conversation, but I needed help with this problem, too! Thanks so much Jenny for the solution! Hopefully this may clear things up for anyone looking after me! I believe, Jenny, that you meant 1:3 -> 5:15 (not 16) TonyC, the book says 1/5 of the people participated, so that means that one out of a total of 5. So for every one that participated, there were 4 that did not. Thus the 1:4 ratio for participants. You have 2 ratios, one being 1:4 and the other 1:3, and the total units in the first is 5 and the second 4. So you get the common multiple of 20. So, the first ration (with 5 total units) gets multiplied by 4 to get a total of 20 units. The second ration (with a total of 4 units) gets multiplied by 5 to get the total of 20 units. It was helpful for me to subdivide each unit to show the 20. 1:4 before I--------I now 4:16 I--I--I--I--I I--------I--------I--------I--------I I--I--I--I--I--I--I--I--I--I--I--I--I--I--I--I--I 1:3 before I----------I now 5:15 I--I--I--I--I--I I----------I----------I----------I I--I--I--I--I--I--I--I--I--I--I--I--I--I--I--I Then when you compare the "before" bars (4:16) and the "after" (5:15) you can see that one unit transferred from non-participating to participating, and since you know that 2 people transferred, now you know that 1 unit represents 2 people. So you multiply 2 by the total number of units, 20, to get the total number of people, 40. Hope that helps someone!
  3. Earlier
  4. Teresa

    US Edition 6A Practice 3C

    Thank you!!
  5. Jenny

    US Edition 6A Practice 3C

    It would be useful if you explain where you had difficulty with the problem, that is, what steps you did so far. Before |______| Meili |______|______| Sulin After |______|______|______|______| Meili |______|______| Sulin When you draw the after model, you make Sulin's the same length as before, and Meili's twice as long. Then, comparing to the before model, you can see that if you make the units the same, the ratio after becomes the equivalent ratio 4 : 2. So 3 units were added, and those 3 units are the 12 new books. Now you can solve the problem.
  6. Teresa

    US Edition 6A Practice 3C

    Hi, I am new to this forum and had an issue with a problem that I couldn't quite figure out. We are using the US Edition 6A working on pg. 38 in the Textbook, Practice 3C, number 6. If someone could help me out on this one it would be greatly appreciated. Thanks in advance.
  7. Jenny

    Grade 5 Challenging Word Problems

    That is an algebraic solution. They have not been taught algebra in grade 5. But they can solve the problem using the bar diagrams.
  8. Steffen Carter

    Grade 5 Challenging Word Problems

    Here is the simplest solution: Ryan's marbles = X Marie has 4 times less marbles then Ryan would have if he lost 15 marbles (it means he would have x-15) So, Marie marbles = (x - 15) / 4 If Ryan lost 75 marbles (it means he would have x-75), he would have 1 1/2 times as many marbles as Marie. We got an equation: x - 75 = 3/2 { (x - 15) / 4) } Multiply both sides by 8: 8x - 600 = 3x - 45 5x = 555 x = 111 Answer: Ryan have 111 marbles.
  9. Dimensions Math, or Primary Math US edition or Standards edition, which both predate Common Core. We do not carry any books beyond grade 8.
  10. Howdy Y'all, I am looking for math books devoid of common core nonsense. Which Singapore series would I be looking to buy for K through 12?
  11. Jenny

    Challenging word problems grade 1

    You could use either one. They are not aligned lesson by lesson with any program. You just have to be sure you do the topics that correspond. I am not familiar with the one you found online to know whether it is more or less challenging than the one we sell. Pick what you like the best, it is just a supplement.
  12. Jenny

    8th Grade from US to Singapore

    In Singapore, it will be called Secondary 2. Kids who turn 7 during the calendar year are in Primary 1. It goes from Primary 1-6, then Secondary 1-4. The school year is the calendar year, so they start the grade level in January. Our 8th grade Dimensions Math level is close, but not identical, to Singapore's Secondary 2 syllabus. You can also look up their syllabus on line at Singapore's ministry of education web site. It is based on the Express syllabus, which is Secondary in 4 years. Students can take a second math class in Secondary 3 and 4, called Additional Math.
  13. Hi, Please guide if a student has to relocate to Singapore from US at 8th grade... what grade level he will be in Singapore... And which level of Math in singaporeMath we can get help from to have the idea of syllabus ? Is the challenge level same as in US or harder in Singapore curriculum? Thanks sri
  14. Hi, I want to buy word problems book. But the only book I found on your website is for common core. I have found Singapore math 70 must know word problem at Canadian distributor website. I live in Canada I am doing standard edition 1A and 1B(textbook and workbook). What word problem book for grade 1 you would recommend? Thanks, Saba
  15. Jenny

    Grade 5 Challenging Word Problems

    Draw 4 units for Ryan and under that draw 1 unit for Marie, and then add a little bit to Ryan's bar and label it as 15 units. Under that, draw 1 unit the same as above For Marie, and right above that 1 1/2 units for Ryan. Then, add some to Ryan's bar to make it the same length as Ryan's bar above. Divide all the units in half. How you have 8 units plus 15 for Ryan's first bar, and 3 units + 75 for Ryan's second bar. Look at both of them. Can you see that 5 of these half units + 15 is the same as 75? So 5 half-units = 75 - 15. Now you should be able to solve the problem.
  16. I am stumped in how to help my daughter with the following problem in Primary Mathematics Challenging Word Problems Grade 5. Page 20 Fractions Challenging Problems number 5 Ryan and Marie had some marbles. If Ryan lost 15 marbles, he would have 4 times as many marbles as Marie. If Ryan lost 75 marbles, he would have 1 1/2 times as many marbles as Marie. How many marbles did Ryan have at first? The way they did it in the back is confusing and I do not know how to work it out to help my daughter.
  17. Steffen Carter

    Abacus in Singapore Maths

    Thanks for the information.
  18. Jenny

    6B textbook, p85, #4

    If one angle is 10% greater than another, it is 110% as much. So if you say that angle SAY is 100%, then angle HAY is 210% 210% -> 105 1% -> 105/210 = 1/2 110% -> 1/2 x 110 = 55 Angle HAS is 55 degrees.
  19. Jenny

    Abacus in Singapore Maths

    No, it is not. You can of course use it as a tool. I believe if parents in Singapore want their kids to learn to use the abacus they can enroll them in separate courses. But it is not an integral part of their math program.
  20. Steffen Carter

    Abacus in Singapore Maths

    Abacus is not the part of Singapore maths curriculum?
  21. My son and I just hit a mental block on this problem. We know both angles would equal 105 but the percentage difference is throwing us off. Can someone explain this problem to us? Thanks.
  22. Jenny

    Intensive Practice Grade 5

    Please give page number in the future. I have had people mistype the problem in the past. Penny has 267. Rohanna has 8 times as many as Penny, so 8 x 267 = 2,136 Rohanna has 12 times as many as Sabrina, so Sabrina has 2,136 รท 12 = 178 Altogether: 267 + 2,136 +178 = 2,581
  23. Can somebody, please walk me through the steps for this problem. Thanks - Penny has 267 stamps in her album. Rohana has 8 times as many stamps as penny. The number of stamps Rohana has is 12 times that of Sabrina's. How many stamps do they have altogether?
  24. Nanda

    Primary vs. Dimensions

    Thank you, Ladies for the promptly and thoughtful reply. I heard both of you! I felt in love with PM because it helped me and my children to understand and love Math, but I do rely a lot on the Home's guide at the same time my husband, who is a teacher, just reads the topic and produces a whole lesson without even seeing the books! Anyway, I have been searching and seems like there is nothing out there that follows Singapore approach I will stick with PM 6 next year and get the DM 7 to start "studying it". Thanks again!
  25. Mrs. Bee

    Primary vs. Dimensions

    When I spoke of lack of word explanations I wasn't comparing DM to the PM Textbooks, but to the Teacher/Parent's Handbook. Ultimately, I do trust Singapore Math as an excellent program, and this is why we keep working with DM, and why my advice to Nanda was simply to use PM 6 instead of DM 6, and delay the switch until 7. I just don't find teaching DM nearly as easy and rewarding as PM, and I say this as a seriously math-loving person. But I am also a homeschooling parent who needs to teach many subjects to multiple grade students: when it comes to lesson planning, PM had my back, DM not so much. But it's not a bad math program, in the sense of being bad at teaching math: in my opinion, though, it's not nearly as homeschooling parent-friendly as PM. I'm sure I will get the hang of DM's teaching method, eventually!
  1. Load more activity
×