# MATHCOUNTS MINIS

### A video resource created by Art of Problem Solving!

Art of Problem Solving's Richard Rusczyk, a MATHCOUNTS alumnus, has been creating MATHCOUNTS Minis videos for more than a decade! Minis provide detailed explanations for MATHCOUNTS problems and their associated math concepts, plus include activity sheets. They're great resources for math team practices or club meetings! Visit Art of Problem Solving for many more educational resources.

Great Minis for At-Home Learners
Image Tangent Segments & Similar Triangles

Image Turning Word Problems into Algebra Equations

Image Geometry: 30-60-90 Right Triangles

Image Sequences, Series and Patterns

Image Using Algebra and Number Sense as Shortcuts

Image Geometry: Circles and Right Triangles

Image Solving Quadratic Equations Using Substitution Simplification

Image Number Sense: Looking for Patterns

Image More Than One Way to Solve a Problem

Image Strategic Guessing Using Divisibility Rules

Image Counting Paths

Image Sequences and Central Tendency

Math Topic:
Number Theory, Probability, Counting and Combinatorics
Common Core State Standard:
S-CP.9
Difficulty:
Difficult
Math Topic:
Algebraic Expressions and Equations, Plane Geometry
Common Core State Standard:
G-C.2
Difficulty:
Difficult
Math Topic:
Plane Geometry, Proportional Reasoning
Common Core State Standard:
7.G.1
Difficulty:
Difficult
Math Topic:
Probability, Counting and Combinatorics, Sequences, Series and Patterns
Common Core State Standard:
S-CP.9
Difficulty:
Difficult
Math Topic:
Algebraic Expressions and Equations
Common Core State Standard:
6.EE.7
Difficulty:
Easy
Math Topic:
Algebraic Expressions and Equations
Common Core State Standard:
A-REI.4
Difficulty:
Medium
Math Topic:
Plane Geometry
Common Core State Standard:
7.G.6
Difficulty:
Medium
Math Topic:
Number Theory
Common Core State Standard:
6.SP.5
Difficulty:
Difficult
Math Topic:
Algebraic Expressions and Equations, Coordinate Geometry
Common Core State Standard:
8.G.8
Difficulty:
Difficult
Math Topic:
Probability, Counting and Combinatorics
Common Core State Standard:
S-CP.9
Difficulty:
Medium
Math Topic:
Plane Geometry, Proportional Reasoning, Solid Geometry
Common Core State Standard:
6.G.1, 7.G.1, 7.G.6
Difficulty:
Difficult
Math Topic:
Algebraic Expressions and Equations
Common Core State Standard:
A-SSE.2
Difficulty:
Medium
Math Topic:
Algebraic Expressions and Equations, Plane Geometry
Common Core State Standard:
7.G.6
Difficulty:
Difficult
Math Topic:
Sequences, Series and Patterns
Common Core State Standard:
F-BF.2
Difficulty:
Medium
Math Topic:
Plane Geometry
Common Core State Standard:
7.G.6, G-C.2, G-C.5
Difficulty:
Difficult
Math Topic:
Probability, Counting and Combinatorics
Common Core State Standard:
S-CP.9
Difficulty:
Medium
Math Topic:
Algebraic Expressions and Equations, Number Theory
Common Core State Standard:
8.EE.1
Difficulty:
Difficult
Math Topic:
Probability, Counting and Combinatorics
Common Core State Standard:
S-CP.9
Difficulty:
Difficult