SAT Math Last Class

lilijia Posted in SAT math，
22 June 2020
Comments Off on SAT Math Last Class

Today we went through all the problems in the final exam and took a group photo 全家福 together via Zoom.

Thank you for this wonderful year! This class has been filled with wisdom and laughter 🙂

Each of your curiosity, enthusiasm, and creativity has inspired me and will encourage me in my future teaching.

Please stay in touch, and I look forward to hearing from you in the future.

As I said, our course ends, but our friendship lasts.

May my best wishes always be with you!

Sincerely,
Lijia

PS: Here are some SAT Math resource for your future study:

SAT Math Prep Online Resources:

https://www.khanacademy.org/test-prep/sat/sat-math-practice

https://collegereadiness.collegeboard.org/sample-questions/math

https://collegereadiness.collegeboard.org/sat/inside-the-test/math

https://www.albert.io/sat-math

https://www.cracksat.net/index.html

https://satprepget800.com/#Resources

https://thecollegepanda.com/categories/sat-math/

Free Online Practice Test @ Khan Academy

https://www.khanacademy.org/mission/sat/practice/math

AoPS Number Theory: Final Exam

lilijia Posted in AoPS_Number_Theory，
21 June 2020
Comments Off on AoPS Number Theory: Final Exam

It is difficult to believe that here comes our last class. Today we had our last final exam (first online test). Please find the sample paper with answer key for your reference:)

Please read it through and feel free to reach out if you have any questions. The course ends, but our friendship lasts forever:)

(Why everyone seemed to be so “serious” after our exam ：P)

Enjoy a great summer!

SAT Math Final Exam

lilijia Posted in SAT math，
14 June 2020
Comments Off on SAT Math Final Exam

Today we held our first online final exam. Thanks to Google Form, students can get their grades soon after turning in the paper:)

Please review and let me know the problems you would love to discuss in our next Sunday class.

No homework this week. Just relax, and enjoy the lovely summer!

AoPS Number Theory Ch.15 Number Sense

lilijia Posted in AoPS_Number_Theory，
14 June 2020
Comments Off on AoPS Number Theory Ch.15 Number Sense

Lesson review
Problem Solving Strategies:

  • change the forms of numbers
  • understand different solutions/methods
  • parity considerations (modulo 2)
  • narrow your search to a small list
  • use clues to gather enough information to solve the problem

Homework:

Page 297-299

Ex.15.22, 15.24, 15.28, 15.31, 15.34, 15.35, 15.40, 15.44,  15.48, 15.49, 15.56, 15.61

Prepare for the final exam next week!

  • (Login to Google Classroom at 12:20 pm–the test paper will be released then).
  • Print them out, and do it in our Zoom class — keep your camera on all the time (test will end at 1:50 pm. Make sure you turn in it by 2:00 pm)

Get well prepared and Good luck!

SAT Math Ch.28 Volume

lilijia Posted in SAT math，
07 June 2020
Comments Off on SAT Math Ch.28 Volume

Lesson review:

Congratulations to Julia, Kevin, and Phoebe in the Kahoot! game about Volume:)

Homework:

1. Finish Chapter 28 Exercise (Page 251-253)
2. Finish Khan Academy Practice (5 problems)
3. Prepare for final exam next week.

The test paper will be released at 3:30 pm on 6/14, in Google Classroom. You can either print it out or read it on another device. During our exam (3:40-5:00), you should keep your camera on. Please type your answer in the given Google Form, and your score will be automatically graded after you turn in.

Section 1: 25 min, no calculator.

Section 2: 55 min. Calculator allowed.

Good luck, and see you next Sunday!

AoPS Number Theory: Ch. 14(II) Linear Congruences

lilijia Posted in AoPS_Number_Theory，
07 June 2020
Comments Off on AoPS Number Theory: Ch. 14(II) Linear Congruences

Lesson review:

  • a linear congruence equation
  • an inverse: b*b^(-1) is congruent to 1 (mod m)
  • only if gcd (m,r)=1, otherwise r has no reverse modulo m.
  • if ak is congruent to bk (mod mk), then a is congruent to b (mod m)
  • if ac is congruent to bc (mod m), then a is congruent to b (mod m/gcd(m,c))
  • many remainder problems are just linear congruences.

Extra Resource

Homework

  • Pg. 270 Ex.14.3.1, 14.3.3, 
  • Pg. 275 Ex.14.4.1, 14.4.4, 14.4.5
  • Pg. 278 Ex. 14.20, 14.27, 14.29  to 14.31

Feel free to reach out if you have any questions in this Chapter. We will learn Ch.15 next Sunday, and have our final exam on 6/21.

Make sure you study hard and start your review as early as possible:)