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Standard, Expanded, and Word Form Using Base Ten Blocks: 2.NBT.3

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Pattern Block Line of Symmetry Design Example

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Math is Fun

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A Bar Graph (also called Bar Chart) is a graphical display of data using bars of different heights.

Imagine you just did a survey of your friends to find which kind of movie they liked best:

We can show that on a bar graph like this:

It is a really good way to show relative sizes: we can see which types of movie are most liked, and which are least liked, at a glance.

We can use bar graphs to show the relative sizes of many things, such as what type of car people have, how many customers a shop has on different days and so on.

Example: Nicest Fruit

A survey of 145 people asked them "Which is the nicest fruit?":

And here is the bar graph:

That group of people think Blueberries are the nicest.

Bar Graphs can also be Horizontal, like this:

Example: Student Grades

In a recent test, this many students got these grades:

And here is the bar graph:

You can create graphs like that using our Data Graphs (Bar, Line, Dot, Pie, Histogram) page.

Histograms vs Bar Graphs

Bar Graphs are good when your data is in categories (such as "Comedy", "Drama", etc).

But when you have continuous data(such as a person's height) then use a Histogram.

It is best to leave gaps between the bars of a Bar Graph, so it doesn't look like a Histogram.

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A Bar Graph (also called Bar Chart) is a graphical display of data using bars of different heights. Imagine you just did a survey of your friends to find which kind of movie they liked best: We can show that on a bar graph like this: It is a really good way to show relative sizes: we can see which types of movie are most liked, and which are least liked, at a glance.

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ABCya Base Ten Blocks virtual manipulatives helps students learn mathematical concepts including addition, subtraction, number sense, place value and counting.

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Faces, Vertices, Edges

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Faces Edges Vertices-3D Shapes- Euler's Geometry Formula

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Math is Fun

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Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

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Canadian Coin Values | Math | Grade-1,2 | Tutway |

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Tutoring Tips: Mental Math Addition Tricks

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Learn the mathematics behind adding two-digit numbers, and tips to help your students (and you!) add more quickly! The mission of School on Wheels is to provide one-on-one tutoring and educational advocacy for school-aged children impacted by homelessness. http://www.indyschoolonwheels.org

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Teacher resources and professional development across the curriculum

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Math Antics   Multi Digit Addition   YouTube

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Uploaded by Moribe Education on 2015-04-15.

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Geoboard is a tool for mathematical exploration. Stretch bands around the pegs to form line segments and polygons, and make discoveries about perimeter, area, angles, congruence, fractions, and more.

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Algebra Basics: Solving Basic Equations Part 1 - Math Antics

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ABCYa

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ABCya Base Ten Blocks virtual manipulatives helps students learn mathematical concepts including addition, subtraction, number sense, place value and counting.

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Appropriate Untis of Measurement for Distance

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Appropriate Untis of Measurement for Distance

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Metric System Conversions Song | Measurement Song for Kids

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Math is Fun

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Numbers can have interesting patterns.
Here we list the most common patterns and how they are made.

Arithmetic Sequences

An Arithmetic Sequence is made by adding the same value each time.

Example:

This sequence has a difference of 3 between each number.
The pattern is continued by adding 3 to the last number each time, like this:

Example:

This sequence has a difference of 5 between each number.
The pattern is continued by adding 5 to the last number each time, like this:

The value added each time is called the "common difference"

What is the common difference in this example?

The common difference could also be negative:

Example:

This common difference is −2
The pattern is continued by subtracting 2 each time, like this:

1739, 1740, 2511, 9771, 9772

Geometric Sequences

A Geometric Sequence is made by multiplying by the same value each time.

Example:

This sequence has a factor of 3 between each number.
The pattern is continued by multiplying by 3 each time, like this:

What we multiply by each time is called the " common ratio".

In the previous example the common ratio was 3:

We can start with any number:

Example: Common Ratio of 3, But Starting at 2

This sequence also has a common ratio of 3, but it starts with 2.

Example:

This sequence starts at 1 and has a common ratio of 2.
The pattern is continued by multiplying by 2 each time, like this:

The common ratio can be less than 1:

Example:

This sequence starts at 10 and has a common ratio of 0.5 (a half).
The pattern is continued by multiplying by 0.5 each time.

But the common ratio can't be 0, as we get a sequence like 1, 0, 0, 0, 0, 0, 0, ...

658,796, 1741, 10006, 10007

Special Sequences

There are also many special sequences, here are some of the most common:

Triangular Numbers

This Triangular Number Sequence is generated from a pattern of dots that form a triangle.

By adding another row of dots and counting all the dots we can find the next number of the sequence:

Square Numbers

They are the squares of whole numbers:

Cube Numbers

They are the cubes of the counting numbers (they start at 1):

Fibonacci Numbers

The Fibonacci Sequence is found by adding the two numbers before it together.
The 2 is found by adding the two numbers before it (1+1)
The 21 is found by adding the two numbers before it (8+13)
The next number in the sequence above would be 55 (21+34)

Can you figure out the next few numbers?

Other Sequences

There are lots more! You might even think of your own ...

1736, 1737, 3860, 3861, 3862, 1735, 1738

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Number Sequences - Square, Cube and Fibonacci

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An Arithmetic Sequence is made by adding the same value each time. This sequence has a difference of 3 between each number. The pattern is continued by adding 3 to the last number each time, like this: This sequence has a difference of 5 between each number.

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Basic Shapes and Their Attributes (1.G.1)

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Patterns & Classification lesson with objects. For kindergarten & 1st grade kids

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Hundreds Chart

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Skip Counting by 2, 5, 10 Using a Hundreds Chart: 2.NBT.2

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Lines of Symmetry: Grade 4 Module 4 Lesson 12

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Math is Fun

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Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

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The Interactive Thermometer

Drag the slider, or use up and down keys:

images/thermometer-inter.js

Quick Conversion Guide

°C to °F
Multiply by 9, then divide by 5, then add 32

°F to °C
Deduct 32, then multiply by 5, then divide by 9

Why? Read Temperature Conversion.

Celsius Rhyme
Thirty's hot
Twenty's nice
Ten's cool
Zero's ice
Fahrenheit Rhyme
90 is hot
70 is nice
50 is cool
30 is ice

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Drag the slider to see how Fahrenheit and Celsius are related, with examples.

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Digital Clocks show us the time using numbers, like this:

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Telling Time For Children - Learning the Clock

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Skip Counting by 2, 5, 10 Using a Hundreds Chart: 2.NBT.2

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Skip Counting by 25 to 200 | Count By 25 | Counting Song | Skip Counting Song | Jack Hartmann

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ABCya! * Number Chart - Use to Learn Number Patterns & More

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The interactive number chart is a great way for students to discover number patterns, skip count, and learn multiplication tables. Color the interactive number charts to find patterns in numbers or use them for counting exercises. Children can print their charts too!