Categories
Edu-and-Ladue-School math-and-edu

Math and Math Acceleration

Reading Time: 5 minutes

(Update 09-06-2025) Came across this from Ladue Middle School website.

Math Acceleration
Please review this document regarding Math Acceleration at LMS. If you have questions, please contact Mrs. Sarah Schwartz, Assistant Principal and liaison to the math department, at xxxxxx

(Update 05-25-2025) It appears our younger daughter mostly caught up with her peers in this school year in terms of math. She accelerated in the beginning of 2024/2025 school year – instead of taking the 5th grade regular math, she was doing both 5th and 6th grade math in this school year.

Another note: our older daughter who is entering 10th grade in the coming school year 2025/2026, will attempt the math acceleration test again over the summer. But we as parents are asked to attend a Zoom session this coming week – probably something related to the test.

(Original 08-24-2024) I am not 100% sure how much the below section is applicable to the kids in the Ladue School nowadays. Couple things though:

1) Math is mostly a universal kind of course, meaning, there is no American math, or Chinese math, or Indian math,… there is only one math: we want our kids to learn the right math, not the wrong one (wrong math is not math, it’s probably more like a fiction 🙂

2) No pain no gain. I am not saying “work harder” is the most important. But the kid is expected to do some work, not just reading through the textbook.

My own math learning journey

I talked a little on math and math acceleration on my own math learning journey on my blog post – My Zhenhai Middle School Days我在镇海中学的日子 . Here is what I said:

……Related to that, my class got a very well known counselor and he was pretty strict too. He is unconventional in some ways, for example, he was math teacher, but he rarely gives lecture. He gave us a lot of homework instead, basically we learned ourselves through doing those homework. We joked the homework is never ending. Because as soon as we finish some, he would give out new ones 🙁 I recall some kids really struggled because they are not used to the pace, the work and I am guessing due to lack of instructions. I am not saying the teacher is all bad. Maybe he was not the best teacher for some of the kids. For me I think I learned self-study in his system……

In Chinese below

……与此相关的是,我班有一位非常有名的辅导员,他也很严格。他在某些方面不按常规,例如,他是数学老师,但他很少讲课。他给了我们很多功课,基本上我们都是通过做功课来学习的。我们开玩笑说作业永无止境。因为一旦我们完成一些,他就会给出新的:-(我记得有些孩子真的很挣扎,因为他们不习惯节奏,工作,我猜是由于缺乏指导。我不是说老师都不好。也许他不是一些孩子最好的老师。对我来说,我认为我在他的系统中学会了自学……

I recall I was usually one grade ahead in terms of math, for example, when I was at grade 6, I learned grade 7 contents myself,… and so on. I wasn’t the most advanced kid on math acceleration – I recall one kid in my class finished all high school math when he was at 8th grade (the last year of middle school). Again we don’t have a formal math acceleration program, but I think probably half the class (we have about 50 kids in our class, so that means 25 kids), were able to have a pace like I had. That’s the main acceleration that I did. I don’t recall do anything extra at elementary school, for high school, I may have done some on my own (don’t recall exactly), plus the thing I mentioned below. But I do recall in terms of math education, the math teacher at my 5th grader left me impression: at one time, he put up a chart that ranks all the kids’ math quizzes. I was the top student. I understand this is likely illegal here in today’s America, and I don’t know if it’s legit in China nowadays. And imagine how the kids ranked towards the bottom would feel. But at the time, it did boost my confidence on my math. Also note: I moved from my village school to this town school at the beginning of my 5th grade: so I was also a new student there trying to fit in.

At the freshman year of my high school, I was very fortunate to have a math teacher who I like, and he also thought highly of my math skills, for some reason 🙂 I think probably because I did okay in the math competition at the local level. Anyway I was invited to the training for math competition in the summer break. Basically another very good math teacher gave us (probably 4 kids) extra lesson for a week or two. That was probably the highlight of my math journey.

Math and Math Acceleration at Ladue Schools

This is the district web page for Math education

And the School Board documentation (power point) on Math Acceleration: so board does have some consideration on this topic. This is mostly for elementary school students.

Math Acceleration at LMS. Btw, quite a bit of useful information on curriculum including Math at this LMS web page.

My Observations

Mainly from our two daughters, and plus other friends’ kid.

  1. It’s relatively easier to accelerate in elementary school. Things get harder in middle school and beyond.
  2. Prepare early: this is probably more relevant for middle school kids, as it’s harder to pass the acceleration tests. I noticed the “Advanced Geometry” test takes two days (2 hours in each of the 2 mornings).

Why Accelerate?

Or Benefits of math acceleration. Right now, the main thing I can see is the kid get to take the Calculus, and the Physics/Chemistry curriculum that requires Calculus, also some other AP courses such as AP Statistics. Most of those STEM courses have prerequisites, and if a kid takes the math in regular pace, eventually he/she won’t have much time to take the mentioned AP courses above.

But, personally I don’t think AP courses are “do or die” for kids during college applications/admissions. Note my older kid is going to be freshman in HS this fall, so take my advice for what it worth 🙂 (Update 09-03-2024): I read from another Ladue mom that she basically said similar things regarding AP courses: don’t go to the AP arms race, take some if applicable, and show that one is capable of higher-level learning during college application.

What are we hope to achieve on kids’ math

Some of the people in the Spoede Elementary School know that I was involved in the Math Fact Scholars here for quite a few years. Personally I think both the math facts and the problem solving are important. When I grew up in China, we had to memorize the multiplication table, and all that. I understand we are at different times and different country, and I came across this tweet just today – it described some of the phenomena here in the math education in the USA, unfortunately. Let me paste the image below.

Source: @stem_feed on X

Personally I really hope we can go back to this. I also pasted one of the pictures below.

Source: @cooltechtipz

Back to the topic, I think I like to see a few things on my kid’s math.

  1. This is most important one, that is they have confidence on math and they know how to learn by themselves. If in doubt, they know how to reach out (a teacher, or a parent).
  2. They are not afraid of the tests: the math test, the MAP test, and other tests that potentially could use math, science for example.
  3. They know how to apply math in daily lives, be at McDonald’s or a grocery store, and college savings/budgeting too.

Please note all this is possible. Again to get to there, instead of “being dreadful of math (or substitute with any other subject”), needs the work and collaboration between, kids, teachers (school) and parents.

Last but not least, I want to leave a positive story at the end. In my recent trip to China, we go to this “bun store” quite frequently every morning, the lady who probably got education level no higher than high school, is a math or calculation wizard, she doesn’t use calculator, she can come up with a total as soon as we ordered the “bao zi”. Her mental math is way better than me: how did she get this good? Practice, practice, practice. This is also the slogan we say at Math Fact Scholars program.

Categories
401k and Personal Finance Business Investing

All the math we need for trading stocks

Reading Time: 2 minutes
A fun math problem suitable for a confident 4th grader

I went to my 9 year old (4th grader)’s class recently and tried to talk about the “The Stock Market Game” (btw, it looks like my main winner is Nike for now 🙂 Below is something I shared in my daughter’s class.

I also tried to answer some questions on individual stocks too, e.g., Adobe, Chipotle, Peabody Energies (do they still have the same name after emerging from bankruptcy, btw).

All the math you need in the stock market you get in the fourth grade.

— Peter Lynch (famous mutual fund manager in the US)

Warren Buffett said something similar (only need 4th-grade math for stocks) in the 2022 Berkshire Hathaway Shareholder meeting, at about 1 hour 40 minutes mark, morning session (available on Apple Podcast and YouTube)

Warren Buffett bought his 1st stock at the age of 11: 1 minute 28 seconds in the video till 2 min 27 sec . I think he is probably in grade 6 or 7 (he may have skipped grade when he was young).

Mutual Fund (this came up as a question and I prepared a bit)

Illustration of mutual fund

Articles from nerdwallet on Mutual fund


It’s hard to look up Mutual Funds in the Stock Market Game website (app), btw.

VFIAX – VFIAX-Vanguard 500 Index Fund Admiral Shares

I created a notes before I go, and here is the google docs link (you can view it).

PS: 4th grade math on Kahn Academy

(Update 11-10-2023) A coworker recommended the Netflix series below, on personal finance etc. I watched a bit, and I think this is good.

Below is a screenshot, if you are in the free world, you will likely see 2 similar images (to be precise, one is Tweet, the below one is an image)

I think this Netflix documentary series maybe suitable for the kids 4th graders and up 🙂
Categories
Edu-and-Ladue-School math-and-edu

Math word problem – solve 2 variables given their sum and difference

Reading Time: 3 minutes
Not so simple math problem in my opinion

There are a few ways to solve for it. I am aware of 3.

  1. For the problem above, I tried to guess 1st. Because the numbers are easy.
  2. A few years ago I came across the bar model approach from “Math in Focus“, because the school my daughter attends start adopting that math curriculum. Below is another similar word problem and my #barModel solution for it: the total number of adults and kids are 6872, and the number of adults are 2150 more than the number of kids.

3. Use the equation approach. Kids usually started to learn equations from algebra, which in the USA is usually from grade 6, 7 or 8 (again this depends on the school and the kid’s math level).

For the 1st problem: x + y = 1.10 and x -y = 1.00

(add those two equations together) =>

x = 1.05 and y = 0.05

Bonus point: try to solve the 2nd problem using the equation approach.

Bonus problems : try any of the problems in my collection.

Also, here is one more using bar model.

One more problem, solution is shown below. We have 3 boxes

📦

holding total of 4,000 grams of candy

🍭

We know the 1st box holds twice as much as the 2nd box, and 3rd box holds the amount of 2nd box plus 60 grams.

A: 2nd box has 985 grams. 1st box has 1,970 grams and 3rd box has 1,055 grams. Bar model is shown below.

One more interesting (hopefully not too hard 🙂 problem, curtesy of PragmaticProgrammers (https://twitter.com/pragprog)

Have fun with math as you solve the integer number for the question mark:

🐂 = 🐟 – 3
🐂 = 🦃 + 2
🐟 = 3 X 🦃 + 3
🦃 + ? = 7

(Update 10-20-2023) I worked with my 4th grader on 2 more word problems. I don’t think they are easy problems for a 4th grader. But at the other hand, I can understand why she whines about those type of problems, and while I don’t appreciate her whining. I will do my part: try to explain my thinking, and hopefully she will get better solving those.

On a separate yet related note, since I just had parent teacher conference with my 8th grader math teacher, and had conversations with my 8th grader, one thing I can say for many parents is: try to hang in there. Try to help the kid so that he/she don’t fall behind too much.

Categories
Edu-and-Ladue-School Fun math-and-edu

Restarting Math Fact Scholars

Reading Time: 4 minutes

(Update 11-16-2023) I created a MFS FAQ blog post today: I used some of the content below, plus some of the common questions being asked in last year or so. In the future, I will try to maintain/update that one.

(Update 11-02-2023)

A few parents asked about the “1st test” PDF file. It’s the first test a kid will start taking in a particular Tuesday morning (this is just for reference). Each kid is different, so no need to compare your kid with her/his friend. That being said, I believe practice on workbooks is equally important, if not more, compared to the “timed tests” we do on Tuesday mornings. Last but not least, a kid doesn’t have to come every Tuesday morning for testing sessions. Please bring the kid when it works for you/your family and when the kid is ready.

Btw, here is web order form (you will need the SSA MTK credentials to log in).

(Update 09-07-2023)

I just realized today that a couple families re-ordered the same workbooks, and I assume it’s not their intention to reorder (I will re-confirm with each on an individual basis). || Please don’t reorder the same workbooks.

We (the kids) pick up where they left off. For example, last school year, a kid ends up Gold +10, he/she will start from Gold +11. We are not going back. If the kids have the workbooks (in most cases I believe it’s the case), he/she continues to work on it.

The only reason I can think of why you may want to order the same workbooks, is, for example, you lost the workbooks for some reason and / or really wanted the kids to have more practice.

If in doubt, email or text me before placing the order.

(Original 09-2022)

The ordering form is here: the main difference from earlier is now we offer packages only. At least from the Membership Toolkit (MTK) website at this time. Note you will need to register at this MTK website in order to see the form. For some parents I think they may already have the workbooks, or they need workbooks that are not 100% same with the package, please let us know (email: spoedemathfactscholars@gmail.com; text 314 540 2721), and we will try to work out something. After ordering, the workbooks will arrive in about a week. My current thinking is have the teacher giving it to the kid: but we can discuss delivery (in the Spoede school boundary) or pickup as needed too.

Also, if you prefer pay via check / cash, or if you need to register your kids outside of those pre-defined packages (this happens sometimes, due to various reasons), please fill out the registration form here, and bring the check / cash to me (I will text you the address).

Last but not least, a special note for those who participated and purchased the workbooks before the pandemic shutdown. The kids were kindergarteners and 1st graders in Spring 2020, and because we have 2+ years break, the kids are 3rd and 4th graders now. They are welcome to come back for testing for bronze or silver medal level tests, respectively. If there is any question regarding their appropriate test level, or proceed further along in the program, please let us know (again please note the contact info above).

Overview

The kids will practice their workbooks at home. I probably should emphasize that for many kids, especially at the beginning, parents will likely need to get involved, mainly via encouragement, also check the work to make sure the kids did it correctly. The test will be held on (most) every Tuesday morning at about 8:15 to 8:45 am, before school. Once the kid completes the workbook, and passes all the tests in a medal or trophy level, the medal or trophy will be awarded.

The test emphasizes both accuracy and speed on math facts. There are some problem solving (word problem) at the trophy level (platinum, fraction, decimal and percents). For blue ribbon / bronze level there are addition and subtraction, for silver and gold there are multiplication and division. The workbooks for blue ribbon / bronze medal level are the same, ditto for silver / gold medals. The bronze and gold level tests are 2 minutes long, silver is 3 minutes. I think they all have 18 problems. All trophy level tests are 3 minutes. At platinum level there are sometimes two approaches to perform calculation: the traditional method which is more commonly taught and used, and the mental approach which basically we do it in our mind (our heart) without writing out the intermediary results during calculation (sometimes we call it borrowing or lending). Those distinction sometimes caused confusion for the kids, and if parents need some more explanation, please let us know.

The skill levels is explained here. Please note Math Fact Scholars program is owned by Math Fact Scholars, LLC. SSA is just helping run it at Spoede school.

Volunteered needed: this cannot run without volunteers. We need volunteers to run the test: grading, manage the test box, help filing the test papers, to the backend work: processing the order, ordering the workbook and testing copies, reviewing the test papers, and recording them in the google spreadsheet that we publish etc.

Below are the dates:

Oct 4th
Oct 11th
Oct 18th
Oct 25th

Nov 1th
Nov 15th
Nov 22nd
Nov 29th

Dec 6th
Dec 13th
Dec 20th

Jan 10th
Jan 17th
Jan 24th
Jan 31st

Feb 7th
Feb 14th
Feb 21st
Feb 28th

Mar 7th
Mar 14th
Mar 28th

April 11th
April 18th
April 25th

May 2nd
May 9th
May 16th

PS: obviously math and problem solving are important for kids academic and grownups career / daily lives. I am a strong believer of math, you can see read from my recent post here. At the same time we need to keep in mind math facts and speedy calculation are just a part of the equation (no pun intended). Each kid develops in her / his unique, as parents we should encourage our kids to try harder, at the same time don’t be overly zealous when we saw a friend of our kid got some medal or trophy. At this day of age of Facebook, Instagram, TikTok and so on, I just want to put it there and make sure parents put thing in perspective.