the powerpoint is here

there are some links (hidden slides) to youtube clips

there's a concern about whether sinA or tanA is used for gradient measures but it seems (appropriately) to be tangent of the angle

gradients of steep hills (updated due to a Guinness record change)

the powerpoint is here

there are some links (hidden slides) to youtube clips

there's a concern about whether sinA or tanA is used for gradient measures but it seems (appropriately) to be tangent of the angle

the powerpoint is here

there are some links (hidden slides) to youtube clips

there's a concern about whether sinA or tanA is used for gradient measures but it seems (appropriately) to be tangent of the angle

the problem is adapted from that posed by user 526427 on MathStack Exchange, March 2nd 2018

using straight line graphs, find two intersection points for various ratios DN : NC (in the form 1 : k where k is an integer)

what if these intersection points have integer x-values?

a powerpoint

the width doesn't change the*x* values of the intersection points

(a stretch)

using straight line graphs, find two intersection points for various ratios DN : NC (in the form 1 : k where k is an integer)

what if these intersection points have integer x-values?

a powerpoint

the width doesn't change the

(a stretch)

various ways to practice solving linear equations with the unknown on both sides

the powerpoint is here

the powerpoint is here

the algebra and function might be explored at some later stage

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