7/12/2025 2011 AMC 12A H reflection notes

2012 AMC 12 A Reflection Notes

Correct Answers: Questions 15–21

• Questions: 15, 16, 17, 18, 19, 20, 21
• Note on #16: Took time on one question using the Law of Cosines

Unanswered but Attempted: Questions 22, 23

• Q22 & Q23:
• Able to solve with help from solution
• Need to improve:
  • Organized counting of objects
  • 3D visualization skills
• Q23 Additional Note:
• Not able to solve during the test
• Watched a video solution afterward—it made sense, but I wouldn’t have made that connection under time pressure

Unanswered: Questions 24, 25

• Q24:
• Not able to compare exponents correctly
• Had to look at the solution to understand
• It was a complicated question
• Q25:
• Unable to solve even after reviewing the solution
• Gaps in understanding—don’t think I could have arrived at that solution myself
• Struggled with 3D visualization and drawing the necessary graph

7/8/2025 2011 AMC 12B H reflection notes

Q16 → Wrong due to silly mistake

Skipped Q20

• Time-sink solution requires heavy observation and quick identification.
• Involves quick use of inscribed angles and arcs.

Q25 → Not enough time

Was not able to solve; did not understand substitution of
n → n-k in the solution + solution video.
Redo!

Q24 Notes:

• Easy algebra but looked difficult at first.
• Just required extra time to complete — able to solve afterwards.

Q15, Q17, Q18, Q19, Q21, Q22, Q23 → Correct

• Q17: Online solution took a long time
• I had the fastest solution : the solution was first finding g(f(x)) = 10x-1, then subbing in the 1 to get h_1(1)=9, then continuously subbing 9 back into 10x-1 so it becomes 9, 89, 899, 8999….
• Q19: Took a long time
• Found faster solution but took time to get to it: this was a least upper bound question for the slope which hits the next lattice point. If I had the answers, it would have been easier to substitute them back into and find which one would work, but I had hidden the answers. What I did next was find a few of the closest points to 102, 50 which the slope would first intersect and the slope would be as close to 1/2 as possible. After testing a few values in the form of (n/1)/(2n+1) and (n+1)/(2n) which give values close to 1/2, 50/99 was the least of these.

Ar. Student reflection notes to keep track of progress

 from a 9th grader Ar. 

Hello Mrs. Lin, 4/25

I hope you are well.

Sorry for sending this a bit late, but I wanted to share my reflection for what I have done this week. I first looked over the problems we did in class. I had some issue with the last problem-I am still not 100 percent on that one. I was hoping if you could please re-explain this in class, that would be helpful. I also looked over the formula sheet. While doing some of the AMC problems you gave, I tried to really focus on the first 7 problems. I was hoping we could go over some quicker ways to think on problems 3, 5, and 6 on the AMC 10 2023 A.

Sorry for sending this late.

Thank you,

Thank you Mrs. Lin. 5/2

I wanted to share my reflection for this week. I reviewed all of the problems we went through during class, and I really understood everything. I continued doing problems from the AMC 10 2023 A test, and I redid problems 3, 5, 7. Those were the problems I struggled with last week, so I reviewed those. I also tried to go on by doing problems 7 to 13, but it took me a while to do those and I didn’t get those correct. I went back to problems 1 through 7, except for the B test.

Thank you,

Hello Mrs. Lin, 5/11

I wanted to share my reflection from this week.

I felt good about all the problems we did in class, but I wanted to just quickly go over the last problem once more. I had a question on that one. I started a new test (2022 AMC 10 A), and did questions 1-10. I was hoping to go over questions 5, 7, 8, and 10. 

5/17 no notes 

5/24

This week I reviewed the SAT problems we went over in class. If you could please give me some of those harder SAT problems going forward for homework that would be great. I thought that they were good practice. 

I didn’t have a ton of time this week for AMC work, because I have finals for many classes coming up. However, I did do some problems from the 2016 AMC 10 A. 

I had some trouble with problems 11, 12 and 9. If we could please go over those that would be great Sorry about the late reflection again.

5/31

Hi Mrs. Lin,

I wanted to send you my reflection for this week. I re-did the AMC 10 2016 A test, including the problems from last week. I also did problems 13 to 20. I had questions on 13, 17, 18, and 20.

Thanks,

6/28 

Hello Mrs. Lin,

I hope you are doing well.

This week, I redid the problems from last class, and reviewed the formula sheet on geometry. I worked on problems 1-15 on the AMC 10 A from 2017. I had some trouble with questions 9, 12, and 15. 

Talk soon,

7/5/2025

Hi Mrs. Lin,

This week, I worked on the problems that we went over in class. Additionally, I worked on AMC 10 problems from the aops website from the 2021 spring AMC 10 A test. I wanted to go over problems 12, 13, 15, and 16.

Talk soon,

H. a 10th grader student reflection notes

 6/17/2025 2010 AMC 12A

 

6/24/2025  2010 AMC 12 B 

An, a 7th grader sample student reflection note, or report

from a 7th grader  A. 

2025 chapter test 

total 34 correct

21-30 wrong on sprint

8th was wrong on target

Sent from my iPhone

2024 chapter test

Sprint Round

2 Q19 Algebra Silly mistake Didn't set up the equation correctly Underline important parts of the question

3 Q23 Geometry Didn't know how to do it Learn how to do it

4 Q25 Geometry Didn't know how to do it Learn how to do it

5 Q26 Algebra Didn't know how to do it Learn how to do it

6 Q27 Time, Rate, Distance Didn't know how to do it Learn how to do it

7 Q28 Number Theory Didn't know how to do it Learn how to do it

8 Q29 Probability Silly mistake Didn't count all possible scenarios Learn how to do a faster way to solve these probability problems

9 Q30 Geometry Didn't know how to do it Learn how to do it

10 Target

11 Q5 Alegbra Wasn't sure on how to do it. Learn how to do it

12 Q6 Number Theory Didn't know how to do it Learn how to do it

13 Q8 Number Theory Wasn't sure on how to do it. Learn how to do it

14

15 Total score: 32

Sent from my iPhone

June 3, 2025 

2023 chapter

Sprint

Q20 time understood question but couldn't think of a solution learn how to do it Total score: 33

Q26 radicals calculation error I made a calculation error either adding or converting the radicals double check the calculation

Q27 3-D Geometry didn't know how to do it. learn how to do it

1. Q28 counting didn't know how to do it. learn how to do it
   Q30 probability didn't know how to do it. learn how to do it
   Target
   Q4 geometry had an idea but it did not work learn how to do it
   Q6 probability didn't know how to do it learn how to do it
   Q7 2-D+3-D geometry had an idea but it did not work learn how to do it
   Q8 probability had an idea but it did not work learn how to do it
   Team
   Q4 combinatorics didn't know how to do it learn how to do it
   Q7 counting and geometry didn't know how to do it learn how to do it
   Q8 geometry didn't know how to create a picture that suits this problem learn how to do use imagination to help create a picture that suits this problem
   Q9 probability had an idea but it did not work learn how to do it
   Q10 counting silly mistake didn't read the question right underline important phrases
   
   

2.   June 29, 2025

3. 2021 state sprint
   20/30
   
   Q14 Probability silly mistake I included one but I wasn't supposed to When it says inclusive only count the highest number from 1 to H.
   Q18 Geometry silly mistake Instead of 6^2 I put 4^2 which messed up the answer First always label the given side lengths then find the unknown side lengths
   Q19 Number theory had the right number but my thought process wasn't right For these type of problems first find the number by subtracting the remainder then find the number of divisors then subtract by the amount of the divisors that cannot have that remainder and that is your answer
   Q22 Algebra didn't know how to this problem Learn how to do this problem a fast way and accurate way
   Q24 Algebra didn't know how to this problem Learn how to do this problem a fast way and accurate way
   Q25 Probability Had an idea got close but it didn't work Learn how to do this problem a fast way and accurate way
   Q27 Number theory didn't know how to this problem Learn how to do this problem a fast way and accurate way
   Q28 Counting Had an idea but it didn't work Learn how to do this problem a fast way and accurate way
   Q29 geometry Had an idea got close but it didn't work Learn how to do this problem a fast way and accurate way
   Q30 Algebra didn't know how to this problem Learn how to do this problem a fast way and accurate way