Warning message
Information shown for on this page is for 2020-21 semester, not for the current semester!
Math 9a, 2020-21
Room:
Time: Sunday 10:15AM - 11:50AM
Grades: 9-10
Prerequisites:
Material fee: $0.00
Homeworks
These homeworks are copyrighted material, posted here for use by
SchoolNova students and parents. Everyone else is welcome to print a copy of these materials for their personal use;
any redistribution or commercial use is prohibited
- Assigned on 09/20: Classwork: Math 9 Algebra baseline test | Classwork: Math 9 Geometry baseline test | Welcome Letter: Math 9 welcome letter to students and parents |
Homework assignment for Sep. 27 is to work on the remaining problems from the baseline review test and previous year's placement tests.
- Assigned on 09/27: Classwork: Algebra. Elements of mathematical logic. | Classwork: Geometry. Commensurate segments. | Homework: Assignment for Oct. 4. |
- Assigned on 10/4: Algebra Classwork.: Elements of mathematical logic. | Geometry Classwork.: Thales proportionality theorem. Similarity | Homework: Homework assignment for Oct. 11 |
I pasted solutions of 3a and 3b from the last homework on the jamboard - you may do the rest. Please try to figure out a convenient way for you to use a jamboard, or any similar virtual board for working in class. For the new Algebra assignment on logic - please look through the handout. Do not pay attention to Math Induction - it will be our next topic.
- Assigned on 10/18: Algebra Classwork: Mathematical Induction. Sequences. Progressions. | Geometry Classwork: Direct and Inverse theorems. Ceva theorem. | Homework: Assignment for October 25 |
You can skip the mathematical induction, sequences and progressions for now (Algebra problems 3-5) - we will do it next time. In geometry - please go over the proof of the generalized Pythagorean theorem (in geometry classwork handout - or just prove it yourself using the property of proportions that we considered in class!).
- Assigned on 10/25: Classwork: Geometry. Similarity and homothety. | Homework: Homework assignment for Nov. 1. |
- Assigned on 11/1: Classwork: Math Induction. Arithmetic and geometric mean. | Homework: Homework assignment for Nov. 8 |
In geometry assignment - please solve the problems using similarity and Thales theorem where appropriate; we will solve use these using Center of Mass later.
- Assigned on 11/8: Algebra Classwork: Math Induction (contd). Eucleadean algorithm (rec) | Geometry Classwork: Geometry. Law of Lever. Method of mass points. | Homework: Assignment for Nov. 15 |
Since we did not cover the Geometry in class, you do not need to do the Geometry part of the homework.
- Assigned on 11/15: Classwork: Geometry. Law of Lever. Method of Center of Mass. | Classwork: Recap: Eucledean algorithm. Continued fractions. | Homework: Assignment for Nov. 15. |
- Assigned on 11/22: Classwork: Algebra. Elements of set theory. | Classwork: Geometry. Inscribed angles and quadrilaterals. | Homework: Assignment for Dec. 6 |
- Assigned on 12/6: Classwork: Set theory. Algebra of sets. | Homework: Assignment for Dec. 13. |
- Assigned on 12/13: Classwork: Algebra of sets. Cartesian product. | Classwork: Geometry. Euclid's theorems. Euler's line. | Homework: Assignment for Dec. 20 |
- Assigned on 12/20: Classwork: Sets. Functions. Injection, Surjection, Bijection. | Classwork: Geometry. The 9 points circle and Euler line. | Homework: Assignment for January 10, 2021 |
We are 1 lesson behind in Algebra - please skip the Algebra part of today's homework and work on the last Algebra assignment that was nominally due today, Dec. 20.
- Assigned on 01/10: Algebra Classwork: Set theory. Equivalence relations and classes. | Homework: Assignment for January 17. |
- Assigned on 01/17: Classwork: Geometry. Method of coordinates. | Homework: Assignment for January 24 |
- Assigned on 01/24: Classwork: Algebra. Comparing infinite sets. Cardinality. | Homework: Assignment for January 31 |
- Assigned on 01/31: Classwork: Algebra. Real numbers. Dedekind section. | Classwork: Geometry. Ellipse, hyperbola, parabola. | Homework: Assignment for February 7 |
- Assigned on 02/7: Classwork: Algebra. Real numbers. Dedekind section. | Classwork: Geometry. Ellipse, hyperbola, parabola. | Homework: Assignment for Feb. 14 |
The material is the same as posted on Jan 31, which we did not have time to study. We will study these topics on Feb. 7 and the homework assignment will be due on Feb. 14.
- Assigned on 02/21: Classwork: Algebra. Powers and roots. Exponent. | Classwork: Geometry. Curves of the second degree (continued) | Homework: Assignment for Feb 28 |
- Assigned on 02/28: Geometry Classwork: Geometry of triangle and trigonometry | Algebra Classwork.: Polynomials and factoring. Little Bezout theorem. | Homework: Homework assignment for March 7 |
- Assigned on 03/7: Geometry Classwork: Geometry of triangle and trigonometry | Algebra Classwork: Polynomials and factoring. Little Bezout theorem. | Homework: Homework assignment for March 7 |
Topics are the same as posted last time, which we did not have time to complete. We will be working on these topics on March 7 and the homework problems will be due on March 15.
- Assigned on 03/14: Algebra classwork: Polynomials. Roots. Vieta theorem. | Geometry Classwork: Trigonometric formulas. Trigonometric functions. | Homework: Assignment for March 21 |
- Assigned on 03/21: Algebra Classwork: Functions and graphs. | Geometry Classwork: Homework review. Vectors. Dot product. | Homework: Assignment for March 28 |
The homework assignment is cumulative for this and next class - you will keep working on these problems for April 11 assignment.
- Assigned on 03/28: Geometry Classwork: Vectors. Solving vector problems. | Homework: Assignment for April 11 |
The homework assignment is the same as before, only the due date was changed to April 11. Please keep working on the problems.
- Assigned on 04/11: Geometry Classwork: Trigonometry homework review | Algebra Classwork: Complex numbers | Homework: Assignment for April 18 |
- Assigned on 04/18: Classwork: Math Battle |
The homework assignment is to solve the Math Battle problems
- Assigned on 04/25: Geometry Classwork: Solving vector problems | Algebra Classwork: Complex numbers. Geometrical interpretation. | Homework: Assignment for May 1 |
- Assigned on 05/2: Classwork: Algebra. De Moivre formula for complex numbers | Classwork: Geometry. Vectors and the center of mass | Homework: Assignment for May 9 |
- Assigned on 05/9: Homework : Assignment for May 16 |
We will continue working on Geometry handouts of April 26 and May 2 (solving vector problems) and Algebra handout of May 2 (complex numbers wrap-up and Cardano formula). You will also continue working on the homework assignment of May 2, which is reposted here.
- Assigned on 05/16: Algebra classwork: Sets. Inclusion-exclusion principle. Probability. | Homework: Assignment for May 23 |
- Assigned on 05/23: Algebra Classwork: Sets. Arrangements. Derangements. |