Posts by: toni
Find values of x and y for which these five expressions all have the same value.
Do you have exactly the right amount of information or more information than you need?
Click here to download the MATCHLESS poster.
Click here to download the MATCHLESS worksheet.
Click here to download the AIMSSEC […]
What do you see in this image?
What is the area of the bigger square edged by dotted line segments of length a?
What is left of that area if you take away a square with edges of length b?
What is the area of the rectangle formed by the yellow […]
1. What do you see in this picture?
Give a proof linked to this picture of the formula $a^2 – b^2 = (a + b)(a – b)$ .
2. What do you notice about the difference between squares of consecutive numbers?
Compare the differences between squares of numbers that differ by 1 […]
Is a picture worth a thousand words, as the saying goes?
This picture shows the first 4 triangle numbers: 1, 3, 6 and 10 and how you can fit 2 identical copies of a triangle together to form a rectangle.
Can you use it to find the number of dots in the […]
Both these two numbers are recurring decimal fractions. The digits 12 are repeated again and again indefinitely.
0.12121212…
12.12121212…
Multiply the first number by 100. What do you get?
Subtract the smaller number from the bigger one. What do you get?
What does this tell you […]
The aim is to make square domino loops, like the one in the picture, from 4 dominoes matching the fractions, decimals and percentages. Start with any domino and find 2 other dominoes to match the ends of the first domino.
For example, the 3/10 and 10
Can you use all 16 […]
Graphs and equations of 7 quadratic functions are given here.
Match them and put them into 7 sets. Write down the coordinates of the intercepts with the axes.
Make a poster showing the graph of each function with the matching equations.
In […]
When x is zero, A is greater than both B and C
For what other values of x is A the greatest?
For what values of x is B the greatest ?
For what values of x is C the greatest?
Is there a value of x when neither A nor B […]
Can you find the easy way to calculate this square root without doing any long division?
Hint: Think of factors!
Click here for the EASY CALC worksheet.
Click for The EASY CALC Notes for Teachers
Click here for the EASY CALC poster.
First complete the number sentences by putting = + – x or ÷ in the boxes. Then explain why the pattern occurs.
Explore the pattern you get when you carry on these multiplications up to 37 × 54.
Click here for MAGIC OF 37 worksheet.
Click here for the Notes […]
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