# 3D Shapes . Intro

We live in a three-dimensional world. Every object you can see or touch has three dimensions that can be measured: length, width, and height. The room you are sitting in can be described by these three dimensions. The monitor you're looking at has these three dimensions. Even you can be described by these three dimensions. In fact, the clothes you are wearing were made specifically for a person with your dimensions. In the world around us, there are many three-dimensional geometric shapes.
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Plan a Pi Day Party for March 14
Teachers in many classrooms celebrate Pi Day this month. Pi -- the number 3.14… gets its own special day on 3/14, or March 14. EdWorld editors have gathered a collection of links to ideas and activities that will help you plan a Pi Day celebration for your classroom or school. If one day of the year screams "Party!" March 14 also happens to be the birth date of Albert Einstein -- which makes the day an extra special one for planning math challenges and math fun! According to Dr. Because pi is 3.14159…, some schools hold their big Pi Day celebrations 3/14 at exactly 1:59 p.m. Education World editors took some time to surf the Internet in search of ideas around which teachers might build Pi Day celebrations. Lesson Plans and Other Activities for Pi Day We have gathered more than two dozen links to Pi Day activity ideas. March 14 Is Pi Day! Great Pi Day Activities for Teachers How to Celebrate Pi Day Pi Day WebQuest Pi Day Lessons from the Math Forum (Grades 5-8) Making a Pi Necklace (Grades 5-8)

Algebra Menu
Algebra is great fun - you get to solve puzzles! With computer games you play by running, jumping or finding secret things. Well, with Algebra you play with letters, numbers and symbols, and you also get to find secret things! The Basics Exponents Simplifying Factoring Factoring - Introduction Logarithms Polynomials Linear Equations Quadratic Equations Solving Word Questions Functions Definition of a Function Sequences and Series Where to Next? Learn trigonometry at our Trigonometry Index Learn about Vectors Learn more advanced algebra at Algebra 2 (College Algebra)

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