Mr. Ohashi's Math Homepage

MATH HELP RESOURCES

To find helpful webpages, you can either scroll down or select one of the topics below:

1st Semester Units
Moving Straight Ahead
Looking For Pythagoras
Thinking With Mathematical Models

2nd Semester Units
Samples and Populations
Growing, Growing, Growing
Kaleidoscopes, Hubcaps & Mirrors
The Shapes of Algebra

Resources for Common Difficulties
Story Problems
Fractions
Integer Computation
Proportions
Probability
Volume & Surface Area
Number Sense

General Information

Need a good reference book for use at home?
I would highly recommend the following two books for keeping at home. They cover nearly all of the math that we will do (especially Algebra To Go), are kid friendly, make good math refreshers for parents, and would be a great resource for tutors! I found mine used online for about $10!

How to do a Quiz Revision
A Quiz Revision can help bring up your grade and increase your understanding. Here are the steps to doing a Quiz Revision.

A Math Dictionary for Kids
Amazing online math dictionary that not only helps kids understand math vocabulary, but also has interactive games for each concept!

Moving Straight Ahead (Algebra & Linear Equations)

Mr. Ohashi's Order of Operations Page
A tutorial I designed on how to use the order of operations, the way we do it in class!

Funbrain.com's Operations Order
A game using the order of operations.

Math.com's Evaluating Expressions
A lesson on how to evaluate expressions by substituting values for variables.

Algebra.Help's Substitution
A lesson on how to evaluate expressions by substituting values for variables.

Mr. Ohashi's Algebra Tutorial
A tutorial I designed on how to solve equations and work with inequalities the way we do in class!

Mr. Ohashi's Solving Problems with Equations Page
A tutorial I designed on how to write algebra equations to solve story problems, the way we do it in class!

Math.com's Solving Addition & Subtraction Equations
A quick lesson on how to solve addition and subtraction equations. It goes step by step, with examples.

Math.com's Solving Multiplication Equations
A quick lesson on how to solve multiplication equations. It goes step by step, with examples.

Math.com's Solving Division Equations
A quick lesson on how to solve division equations. It goes step by step, with examples.

Algebra.Help's Solving Equations
A lesson on how to solve algebra equations. It goes step by step, with examples.

Math.com's Solving Two-Step Equations
A lesson on how to solve two-step algebra equations. It goes step by step, with examples.

Algebra.Help's Equation Solving Calculator
Type in your algebra equation, and the calculator will walk you through solving it!

Algebra.Help's Combining Like Terms
A lesson on how to simplify algebra equations by combining like terms. It goes step by step, with examples.

Math.com's Combining Like Terms
A lesson on how to simplify algebra equations by combining like terms. It goes step by step, with examples.

Algebra.Help's Simplifying Calculator
Type in an algebra expression, and the calculator will walk you through simplifying it!

Mr. Ohashi's Linear Equations Tutorial
A tutorial I designed on working with linear equations, the way we do it in class!

Regents Exam Prep's Straight Lines and Slope
A lesson that explains slope.

Regents Exam Prep's Equations of Straight Lines
A lesson on how to graph linear equations.

Math.com's Slope and Y-intercept
A lesson that explains what slope and the y-intercept are.

Math.com's Linear Equations
A lesson on how to graph linear equations.

Algebra.com's Practice Linear Equations
Need more practice graphing equations? This site will give you an equation to graph and will then give you the solution to check your work!

Algebra.Help's Function Graphing Calculator
Works like a graphing calculator. You type in the equation, the program graphs it.

Looking For Pythagoras (Square Roots & the Pythagorean Theorem)

Mr. Ohashi's Drawing Squares on a Grid
A tutorial I designed on drawing squares on a grid. For use with Problem 1.3 of Looking For Pythagoras.

Math.com's Square Roots
A lesson on what square roots are and how to calculate them

Regents Exam Prep's Areas in Coordinate Geometry
A lesson on finding the areas of shapes on a coordinate grid.

Math.com's Pythagorean Theorem Tutorial
A lesson on the Pythagorean Theorem and how to use it.

Math.com's Labeling Sides Tutorial
A lesson on identifying the hypotenuse, opposite side, and adjacent side on a right triangle.

The Math Lab's Trigonometric Ratios Table
This table has all of the trigonometric ratios for all possible angles in a right triangle.

Thinking With Mathematical Models (Linear and Inverse Variation)

Samples and Populations (Data & Data Displays)

About.com's Statistically Right!
Explains the mean, median, and mode

ExploreLearning's Gizmos
A variety of programs that let you input your own data and they will make data displays for you! There are many different displays to choose from: histograms, line plots, box-and-whisker plots, stem-and-leaf plots, etc. They are very visual and interactive!

Regent's Stem-and-Leaf Plots
Explains what stem-and-Leaf plots are, how to read them, and how to make them.

About.com's Stem-and-Leaf Plots
Explains what stem-and-Leaf plots are, how to read them, and how to make them. It's a little confusing because they have the stem-and-leaf plots in tables.

Regents Exam Prep's Prep Box-and-Whisker Plots
A really good lesson on how to make a box-and-whisker plot

Growing, Growing, Growing (Exponential Growth)

Purplemath's Basic Information on Exponent
An introduction to exponents and some properties about them

Purplemath's Graphing Exponential Functions
An introduction to exponential functions and help on graphing them.

Algebra.com's Exponentials
Help on graphing exponential functions.

Purple Math's Scientific Notation
A tutorial on working with scientific notation.

QuickMath's Scientific Notation Calculator
A need little website where you can type in a number and it will give you the number in scientific notation, and vice versa!

Kaleidoscopes, Hubcaps & Mirrors (Symmetry and Transformations)

The Shapes of Algebra (Systems of Linear Equations and Inequalities)

Mr. Ohashi's Algebra Tutorial
A tutorial I designed on how to solve equations and work with inequalities the way we do in class!

Math.com's Solving Addition & Subtraction Equations
A quick lesson on how to solve addition and subtraction equations. It goes step by step, with examples.

Math.com's Solving Multiplication Equations
A quick lesson on how to solve multiplication equations. It goes step by step, with examples.

Math.com's Solving Division Equations
A quick lesson on how to solve division equations. It goes step by step, with examples.

Algebra.Help's Solving Equations
A lesson on how to solve algebra equations. It goes step by step, with examples.

Math.com's Solving Two-Step Equations
A lesson on how to solve two-step algebra equations. It goes step by step, with examples.

Algebra.Help's Equation Solving Calculator
Type in your algebra equation, and the calculator will walk you through solving it!

Algebra.Help's Combining Like Terms
A lesson on how to simplify algebra equations by combining like terms. It goes step by step, with examples.

Math.com's Combining Like Terms
A lesson on how to simplify algebra equations by combining like terms. It goes step by step, with examples.

Algebra.Help's Simplifying Calculator
Type in an algebra expression, and the calculator will walk you through simplifying it!

Mr. Ohashi's Linear Equations Tutorial
A tutorial I designed on working with linear equations, the way we do it in class!

Mr. Ohashi's Solving Inequalities Page
A tutorial I designed on how to solve inequalities, the way we do it in class!

Math.com's Writing Inequalities
A lesson on how to write inequalities from story problems.

Math.com's Solving Inequalities
A lesson on how to solve inequalities.

Regents Exam Prep's Solving Linear Inequalities
A lesson on how to simplify algebra equations by combining like terms. It goes step by step, with examples.

Purplemath's Systems of Linear Equations
Help on solving a system of linear equations by graphing.

Purplemath's Systems of Linear Inequalities
Help on solving a system of inequalities by graphing.

Mr. Ohashi's Graphing Inequalities Page
A tutorial I designed on how to graph inequalities, the way we do it in class!

Purplemath's Systems of Linear Inequalities
Help on solving a system of inequalities by graphing.

Free Math Help's Solving Systems of Inequalities
Help on how to solve a system of inequalities.

Story Problems

Mr. Ohashi's Word Problem Solving Help Page
A web page I designed to help kids solve story problems, the way we do in class!

Mr. Ohashi's Solving Problems with Equations Page
A tutorial I designed on how to write algebra equations to solve story problems, the way we do it in class!

Algebra.com's Word Problem Solvers
Help on solving almost any type of word problem.

Fractions

Visual Fractions
An on-line tutorial that offers instruction and practice in identifying, renaming, and operating on fractions.

Math.com's Adding & Subtracting Fractions
A quick lesson on computing with fractions. It goes step by step, with examples.

Math.com's Multiplying Fractions
A quick lesson on computing with fractions. It goes step by step, with examples.

Math.com's Dividing Fractions
A quick lesson on computing with fractions. It goes step by step, with examples.

Math.com's Adding & Subtracting Mixed Numbers
A quick lesson on computing with mixed numbers. It goes step by step, with examples.

Math.com's Multiplying Mixed Numbers
A quick lesson on computing with mixed numbers. It goes step by step, with examples.

Math.com's Dividing Mixed Numbers
A quick lesson on computing with mixed numbers. It goes step by step, with examples.

Integer Computation

Mr. Ohashi's Integer Computation Page
A tutorial I designed on how to compute with integers, the way we do it in class!

Math.com's Adding & Subtracting Integers
A quick lesson on adding and subtracting positive and negative numbers. It goes step by step, with examples.

Math.com's Multiplying & Dividing Integers
A quick lesson on multiplying and dividing positive and negative numbers. It goes step by step, with examples.

Mathgoodies' Lessons on Integers
A variety of links to lessons working with integers

Proportions

Algebra.Help's Proportions
A quick lesson on solving proportions

Math.com's Ratios and Proportions
A quick lesson on working with proportions

Amby's Math Resources
This is a tutorial on solving percent proportions exactly the same way we do it in class!

Algebra.Help's Percentage Help
Provides help solving a variety of different percentage story problems.

Algebra.Help's Proportions Calculator
Type in your proportion, and the calculator will walk you through solving it!

Probability

Probability Tutorial
A tutorial I designed on how to do the probability work, the way we do it in class!

Math Goodies' Probability
Has a variety of different lessons based on the type of probability you are working with

MathLeague Probability Help Page
Some good explanations on some basic probability.

Volume and Surface Area

Mr. Ohashi's Surface Area and Volume Tutorial
A tutorial I designed on finding the surface area and volume, the way we do it in class!

Math.com's Area Formulas
Formulas for areas of shapes.

Regents Exam Prep's Area of Polygons
A good reference for the area formulas for different shapes

Math.com's Prism Tutorial
A lesson on what a prism is and how to find volumes of prisms.

Math.com's Pyramid Tutorial
A lesson on what a pyramid is and how to find volumes of pyramids.

Math.com's Cylinders, Cones, and Spheres Tutorial
A lesson on what these objects are and how to find their volumes.

Number Sense

A Dictionary of Units
Lists just about every unit of measurement and some conversions.

Infoplease Conversion Factors
Gives conversion factors for almost any measurement unit.

Mr. Ohashi's Converting Units Page
A tutorial I designed on how to convert units, the way we do it in class!