![David Ladner on Twitter: "My son Isaac's first trigonometry lesson as we calculated how far to push the heads of his Pinewood Derby axles to make a 2 degree bend. https://t.co/mFFj7axyWc" / David Ladner on Twitter: "My son Isaac's first trigonometry lesson as we calculated how far to push the heads of his Pinewood Derby axles to make a 2 degree bend. https://t.co/mFFj7axyWc" /](https://pbs.twimg.com/media/D23uutXWsAEiBQx.jpg:large)
David Ladner on Twitter: "My son Isaac's first trigonometry lesson as we calculated how far to push the heads of his Pinewood Derby axles to make a 2 degree bend. https://t.co/mFFj7axyWc" /
Group GCSE Maths Science English Sessions Statistics Trigonometry Tutoring | in Derby, Derbyshire | Gumtree
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