background preloader

3D Shapes . Intro

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. Related:  Maths

Rader's NUMBERNUT.COM Développement du cylindre Hilbert and Cohn-Vossen wrote about the cylinder: "The circular cylinder is the simplest curved surface. It can be obtained from the simplest curves -the straight line and the circle- by moving a straight line around the circunference of a circle while keeping it perpendicular to the plane of the circle. Another way to get the cylinder is by rotating a straight line about an axis parallel to it. Thus the circular cylinder is a surface of revolution. The surfaces of revolution are an important class of surfaces, characterized by the property that they can be generated by rotating a plane curve about an axis lying in the plane of the curve." (Hilber and Cohn-Vossen. In this page, the cylinder will be closed by two parallel planes perpendicular to the axis. The main interest of this page is to see how a cylinder can be developed into a plane. The lateral surface area of a cylinder is the area of a rectangle. Do you remember how to calculate the volume of a cylinder?

TSST Mathematics Course Strand F: AlgebraIntroductory ProblemF1: FormulaeF2: Algebraic ConceptsF3: Algebraic ManipulationF4: Solving Quadratic EquationsF5: Solving EquationsF6: Solving Inequalities Strand G: Relations, Functions and GraphsIntroductory ProblemG1: CoordinatesG2: Straight LinesG3: Using Graphs to Solve EquationsG4: Functions Strand H: Angle GeometryIntroductory ProblemH1: Angles and SymmetryH2: Angles, Circles and TangentsH3: Constructions and LociH4: Congruence and Similarity Strand I: Geometry and TrigonometryIntroductory ProblemI1: Pythagoras' Theorem and Trigonometric RatiosI2: Trigonometric Problems Strand J: Transformations, Vectors and MatricesIntroductory ProblemJ1: Reflections, Rotations and EnlargementsJ2: Further TransformationsJ3: VectorsJ4: Matrices

HippoCampus - Homework and Study Help - Free help with your algebra, biology, environmental science, American government, US history, physics and religion homework 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)

Numbers sites compiled by sue lemmer | Home | Maths Page | Interactive Maths | Math Reference | Tangrams | Tessellation | Time | Transformations | Puzzles Problems Games | History of Mathematics | Real Life Mathematics | Free Software | Shapes | Number | Data | Measurement | General Maths Sites | Math Magician Games Practise addition, subtraction, multiplication or division, then press print to receive a certificate giving your score, data and time taken Count Us In Games From the ABC, these games are designed to help children understand basic number concepts Thinking Blocks Use these interactive blocks to learn about simple word problems using addition and subtraction Aplusmath Flash cards, a games room, homework helper and worksheets. Numberland Click on a number from 1 to 100 and go to a page about that number. Test the Toad and Other Games Practise moving along a number line from 1 to 15. Count's Home Page Learn to add and subtract with Count Owl Math Art Posters and Clock Arithmetic Egyptian Calculator Human Counting Machine E-Calc

Soutien scolaire en mathématiques Toutes les ressources en mathématiques : Des fiches modifiables et imprimables : des cours, des affichages, des exercices... Des cours théoriques pour la numération, le calcul, les problèmes, la géométrie et les mesures... Des exercices interactifs pour réviser, contrôler ou acquérir des connaissances... Pour les "Petits": Pour les "Grands": Toutes les activités triées par classes : Quelques outils pour le TBI : Soutien scolaire mathématiques - Numération - Calcul - Problèmes - Géométrie - Mesures - CP - CE1 - CE2 - CM1 - CM2 Ressources téléchargeables - Cours théoriques - Activités en ligne

PreAlgegra Chapter 1 Whole Numbers 1-1 Introducing Whole Numbers1-2 Naming Numbers1-3 Rounding Whole Numbers1-4 Adding Whole Numbers1-5 Subtracting Whole Numbers1-6 Multiplying Whole Numbers1-7 Dividing Whole Numbers1-8 Comparing Whole-Number Values1-9 Ordering Operations with Whole Numbers.1-10 Factoring Chapter 2 Integers 2-1 Introducing Integers2-2 Comparing Integer Values2-3 Introducing Absolute Values2-4 Adding Signed Integers2-5 Subtracting Signed Integers2-6 Combining Integer Addition and Subtraction2-7 Multiplying Signed Integers2-8 Dividing Signed Integers2-9 Combining Integer Multiplication and Division Chapter 3 Fractions 3-1 Introducing Fractions3-2 Converting Fractions to Higher Terms3-3 Reducing Fractions3-4 Converting Between Improper Fractions and Mixed Numbers3-5 Multiplying Fractions and Mixed Numbers3-6 Dividing Fractions and Mixed Numbers3-7 Finding Common Denominators3-8 Adding Fractions and Mixed Numbers3-9 Subtracting Fractions and Mixed Numbers3-10 Comparing Fractions

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)