He argues that excessive use of whole-class teaching might mean pupils spending so long being lectured about mathematics that they never get to solve equations for themselves.

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It's the first model to feature an interface powered by the PS2's Graphics Synthesizer and Emotion Engine chips, too, and comes with a clamshell, joystick-equipped remote control that looks like you could use it to pilot a plane and solve complex equations while you watch.

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Other functions solve complex mathematical equations, plot scientific figures or chart natural events.

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