NUMBERS:
- Loose Change ... a free program that lets students use Canadian money to make sums, make change, and add coin values. Highly recommended!
- Finding a Percent of a Number ... three methods explained, and a quiz
- Outdoor Percent Activities ... ideas for teachers.
- Lemonade Stand ... yes, the classic Lemonade Stand program is now available on-line, right here. Make your fortune or go bankrupt, the opportunity is yours! Use lots of sugar!!
- Calcvlator Romanvs ... a calculator that uses Roman Numerals! Lots of fun, ... but remember the Romans didn't use zero or decimals!
- Sets of Numbers ... we explain all the sets you need to know about, including Whole, Integers, Rationals, Irrationals, and even Imaginary numbers. With examples.
- Convert Any Decimal to a Fraction ... including repeaters and partial repeaters. Full lessons, with a quiz.
- Prime Numbers a definition, with examples, and a handy prime number checker!
- Prime Factors ... what they are and how to find them!
- Infinity ... the strange properties of this unwriteable 'number'.
- Division by Zero ... why it's impossible!
- Addition & Subtraction Worksheets ... find out how to get free sets of worksheets (over a hundred) that practice these skills.
- Math Practice ... download a free program that practices your math facts. You set the type of question and the time limit. Excellent. Just 26K. Download it here.
- Math Quizzes ... test your mental math abilities with this series of five on-line self-marking quizzes.
- Falling Equations ... play a Tetris-like game with numbers and operations. Lots of fun, and practices mental math skills. Find out more and download the free program here.
- Timed Math Drill ... practice your facts right here!
- Flash Cards ... a free program to practice math facts. Highly recommended!
- Where Does PI Come From? ... find out where this magic number comes from in the first place!
- How Big is PI Anyway?? O.K....you asked for it! (Well, maybe you didn't, but here it is anyway...) The value of PI, online, to a lot more decimal places than you'll ever need!
- Calculating the Value of Pi Using Toothpicks ... a formula, with its derivation (Math 31), and an experiment for Jr. High math classes. Send in your results! Newly added: run the experiment yourself online!!
GEOMETRY AND MEASUREMENT:
- Parallel Lines ... and the angles formed by a transversal. All the patterns, and a quiz.
- Scale Factors ... why there are no giant ants!
- Precision and Accuracy ... do you know the difference?
- Using a Radar Gun ... (for teachers) Generate data for classroom use using a police radar gun.
- Make Your Own Trundle Wheel ... for measuring large or curved distances. We show you how.
- Throwing a Discus ... using math to discover how to throw it farther!
- Polygons ... definitions of polygons and regular polygons, lots of examples, how to find the interior angles and diagonals, a handy calculator, and a quiz too!
- Perimeter & Area Formulas Math 7&8 students can test their knowledge of the perimeter and area formulas used in those courses. A good review for others too!
- Volume Formulas Math 9 students can test their knowledge of the volume formulas used in that course. A good review for others too!
- Surface Area of Prisms ... worked examples, and some formulas.
- Surface Area and Volume ... why instant coffee doesn't come in chunks!
- Area of a Ring ... by using the length of a chord.
- The 5 Regular Polyhedra ... find out about them, and play with 3-D models!
- Angles in a Triangle ... do they always add to 180°? Nope! Find out why not.
- Exterior Angles in Any Polygon ... what do they add to? Find out.
- Tangrams ...download the game! Find out more here!
- Symmetry ... symmetry explained using paper airplanes.
- Reflections ... or, why your school photos never seem to look like you!
- Transformations ... interactive visual lessons. Students can find out what happens, on their own. With quizzes, games, and a test. All four Gr. 9 Math transformations covered.
- Transformations Animations ... translations & dilatations used to make animations, by a Gr 9 class!
- Dilatations ... find out how to enlarge or shrink a figure. Linked from Transformations page above, too.
- The Area of a Circle ... where does the formula come from?
- The Pythagorean Theorem ... learn about Pythagoras, his famous theorem and how it works, and try a quiz.
- The Pythagorean Theorem ... visualized as the sum of the areas of squares. Interactive!
- The 3D Pythagorean Theorem ... find out how the distance formula works in three dimensions!
- Geometry Facts ... an on-line crossword puzzle! For grades 6 and up.
- One Million ... Just how big IS it?? Find out here. There's a quiz too, with a prize!
- Cartesian Coordinates ... can you recognize plotted points? Test yourself.
TRIGONOMETRY:
- Trigonometry ... a complete review of the basics. Includes a quiz too!
- Calculating Heights ... work through a simple trig ratio problem where we calculate the height of the school's gym. (Error calculations are included for Sr. High Science students)
ALGEBRA AND GRAPHING:
- Introduction to Algebra ... for grade 7 students, but a good review for grade 8!
- Solving Linear Equations ... lots of examples of all types.
- Formulas ... how do they work? Discussion of variables; examples include 'area of a rectangle' and 'lifetime of mammals'
- Powers and Exponents ... for grades 5-9. Lessons, examples, and a graded quiz. Includes exponent rules, zero and negative exponents.
- Ripping Paper ... and powers of 2.
- Multiplying Binomials ... learn how, with the FOIL method, and try a quiz.
- Functions ... definition, examples, function notation & quiz.
STATISTICS & PROBABILITY:
- Bar Graphs and Histograms ... what's the difference?
- Scatterplots and Lines of Best Fit ... learn how they work.
- Probability and Dice Rolling ... an interactive experiment to try, with a quiz.
- Class Averages ... find out why class averages are sometimes not very descriptive, by examining means and medians.
- Box & Whisker Plots ... how to make them, and what they mean.
- Counting Penguins ... how does a biologist count the thousands of penguins on a beach?
MISCELLANEOUS:
- Using a TI83+ Calculator ... find out how to do the things you'll need to do in Math 10.
- Throwing a Javelin ... adding vectors will show you how to do it better.
- Math 9 Topics ... explained by Math 9 & Pre10 students themselves.
FREE SOFTWARE:
- Cue Cards ... make question and answer cards on-screen or on paper to review for a test. Comes with times tables, integers and geometry definitions question sets.
- Geometry/Trig Calculator ... does area and volume formula problems, finding the distance and midpoint, slope, simple trig, circle relationships, and sine and cosine law problems.
- Fraction Calculator ... adds, subtracts, multiplies, and divides fractions, and gives the answer as a mixed fraction and decimal. Easy to use.
[Math 10-12]
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