Efim Konovalov

Review of the 5 main human body systems and the differences between veins and arteries in the human body. Ideal as a review exercise for students in grades 8 or 9 Science/Biology. Contains an answer key.

Factoring practice exercises including traditional factoring, factoring using the Difference of Squares formula, Factoring by Inspection, and factoring using the Binomial Theorem equations. Ideal for grade 10 or 11 math students as classroom practice or homework. Answer key included.

Contains a worksheet on the differences between animal and plant cells and the functions of various animal cell organelles. Ideal for students in grades 8-9 Science or Biology. Answer Key included.

This set of instructional notes and exercises can be used to educate 9 and 10 grade levels math skills about linear equations, slopes, intercepts, and graphs. Also it provides information how to write linear equations in Slope-Intercept form, General form, and Point-Slope form.

Worksheets with exercises on solving sets of 2 equations with 2 unknowns using the Substitution and Elimination methods. Ideal for grade 10 and 11 math students who wish to improve their math skills. Answer key included.

Computation exercises involving volumes and surface areas of various 3D objects, such as cylinders, right-circular cones, and triangular prisms. Ideal as an activity or review exercise for grades 9-11 math classes.

This document contains instructions how to find reference angles in the 4 quadrants when given angles in degrees or in radians, and how to compute sin, cos, and tan of right-angle triangles. Ideal for grades 10-11. Answer key included.

Algebra practice sheet involving application to Economics (in finding equilibrium quantities and prices when given supply and demand equations). Ideal for grades 10-12 or as review practice for 1st year college students.

Math factoring practice of binomials and trinomials using traditional factoring and the difference of squares equation. Ideal as a practice exercise or homework for students enrolled in grades 10-11 math. Answer key is included.

This is a worksheet that asks students to name and come up with the appropriate formulas for different acids and bases. Ideal for Chemistry students in grades 10-11. Can be used as class material, as a review, or as homework.

This is a review exercise for naming of and coming up with formulas for ionic compounds. Includes compounds with polyatomic ions and multivalent metals. Can be used as in-class material, review, and homework.

Factoring and expanding algebraic expressions using the Binomial Theorem. Ideal for math students in grades 10 or 11. Answer key is included.

Instructions on how to complete the square with practice exercises and an answer key. Ideal for math students of grades 9-11 as classroom practice exercises, for homework, or as a quiz.

Exercises involving algebraic equations with decimals. Ideal for math students in grades 9 or 10.

Word problems involving algebraic equations (for example, the area of a circle and a triangle, perimeter of a rectangle, and other formulas). Ideal for math students in grades 9 and 10.

2-page exercises on finding distance between 2 points on an x-y scale using either the Distance Formula or the Pythagoras Theorem. Ideal for math students in grades 9-11.

An exercise sheet involving conversions between and within the Metric and the Imperial systems. Ideal as a review exercise for grades 9-10.

Word questions involving ratios and rates and computational problems involving the conversion between decimals/fractions to percentages.

Definitions of the five human senses and a conjugation exercise.

Algebra practice with single-variable equations