Online Math Resources: Middle School 2

Measuring

A Dictionary of Units of Measurement
Explains the common measuring systems and has lots of background info of their history.
www.unc.edu/~rowlett/units/

Measures
A flash movie of basics of measuring time, weight, and capacity (in metric units).  Has some interactive questions and a test.
www.bbc.co.uk/education/revisewise/maths/shape/13_act.shtml

Measurements
Online lessons with interactive exercises on metric prefixes, symbols, number values, metric mass, length, volume, US length and volume, and temperature conversions.
www.aaamath.com/B/mea.htm

Reading a Tape Measure
Creates a printable worksheet for measuring in inches.
themathworksheetsite.com/read_tape.html

Math-Kitecture.com
Architecture and math resources. Students learn estimation, measuring skills, proportion, and ratios by hand-drafting a floor plan of their classroom to scale.
www.math-kitecture.com/

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Software

Measure-Matic
Measure-Matic will help students learn to read an English and Metric ruler. The English ruler will show the decimal equivalence of a fraction and percentage of a decimal.
Price: $19.95
www.sawmillsoftware.com/Measurement/productpages/rulersoftware.asp

Geo-Calc
Geometry Calculator for Mac. Work out all the measurements (area, perimeter, sides, angles, etc) of 2D and 3D shapes.
Price: $14.99
www.baldgeeks.com/geocalc.htm" target=

Coordinate plane

General Coordinates Game
Either type in the coordinates of a shown point or give coordinates and applet will plot the point.
www.terragon.com/tkobrien/algebra/topics/orderdpairs/op.html

Graphit
A graphing tool that plots both functions and ordered pairs.
www.shodor.org/interactivate/activities/graphit/index.html

Graph Mole
A fun game about plotting points in coordinate plane. Plot points before the mole eats the vegetables.
funbasedlearning.com/algebra/graphing/default.htm

Function Flyer
Create graphs of functions but also allows the manipulation of constants and coefficients in any function so the user can explore the effects on the graph by changing those numbers.  Great tool!www.shodor.org/interactivate/activities/flyall/index.html

Rate of Change in Linear Functions
These great interactive graphs illustrate the concepts of linearity and slope. The discussions provided help the teacher in how to use them.
standards.nctm.org/document/eexamples/chap6/6.2/index.htm

See also the graphing software section.

Geometry

Interactive Geometry
at Mathsnet.net. This is by far the most comprehensive & magnificent interactive geometry resource I've found in the Internet!  The link above is to the main page, or use these quick links to access some of the tutorials (there are lots more):
www.mathsnet.net/geometry/index.html

• Interactive Shape
  Get a clear and complete understanding of shapes, their patterns and properties with the help of interactive pictures.
  www.mathsnet.net/shape/index.html

• Interactive Constructions
  Interactive online course covering points, lines, circles, perpendiculars, bisectors, Euclid, irrationals etc.
  www.mathsnet.net/campus/construction/index.html

• Interactive Pythagoras' Theorem
  History, eleven different proofs illustrated with Java applets, problems, related things, and more.
  www.mathsnet.net/dynamic/pythagoras/index.html

• Three Dimensions
  View 3-D interactive pictures of Platonic solids, Prisms, Pyramids, practice your ability to visualize 3-dimensional objects from all viewpoints, and more. www.mathsnet.net/geometry/solid/index.html

National Library of Virtual Manipulatives for Interactive Mathematics: Geometry
Collection of interactive geometry activities: Congruent triangles, fractals, geoboard activities, Golden rectangle, Ladybug leaf, Ladybug mazes, platonic solids, tangrams, tessellations, transformations and more.
nlvm.usu.edu/en/nav/category_g_3_t_3.html

Geometric Constructions Illustrated with Interactive Java Applets
Drag various points in the sketch to explore additional cases. Also gives complete directions for using The Geometer's Sketchpad® software to construct the basic geometry constructions.
www.nvcc.edu/home/tstreilein/constructions/contents.htm

Geometry Gizmos at Explorelearning.com
"Gizmos" are interactive virtual 'gadgets' that let you explore the mathematical concept. Exploration guides included. By subscription; has free trial. Excellent!
www.explorelearning.com/index.cfm?method=cResource.dspChildrenForCourse&CourseID=122

Triangle Explorer
Practice finding the area of triangles.  NICE!
www.shodor.org/interactivate/activities/triangle/index.html

Interior Angles
Nice lesson and explanation about interior angles of polygons.
www.coolmath4kids.com/interior.html

Angles
Practice obtuse/right/acute angles, and vertical/corresponding/alternate interior or exterior angle concepts
www.shodor.org/interactivate/activities/angles/index.html

Area Of Parallelogram
This Java applet and the discussion illustrates where the formula for area of parallelogram comes from.
www.cut-the-not.com/Curriculum/Geometry/AreaOfParallelogram.shtml

Dynamic Rectangle and Parallelogram
Drag the sides of a dynamic parallelogram or a rectangle to explore these concepts.
standards.nctm.org/document/eexamples/chap5/5.3/index.htm

Length, Perimeter, Area and Volume of Similar Figures
Use this interactive figure to explore how the scale factor affects the size and the area of similar figures.  The discussion provided helps the teacher, but a specific lesson plan would be more helpful.
standards.nctm.org/document/eexamples/chap6/6.3/index.htm

Great Pyramid
Clear instructions on how to make a scale model of the Great Pyramid at Giza out of paper.
mathforum.org/alejandre/mathfair/pyramid2.html

Polyhedra in the Classroom
With this list of internet based activities you can go through a comprehensive study of polyhedra according to objectives of 8th grade.
mathforum.org/alejandre/workshops/unit14.html

Studying Polyhedra
Introduction of the concept, links, great applet illustrating the 5 regular polyhedra.
mathforum.org/alejandre/applet.polyhedra.html

Pythagorean Theorem
This interactive figure illustrates the famous theorem and its proof.
standards.nctm.org/document/eexamples/chap6/6.5/index.htm#applet