Tap the reset button to centre the number line on zero and delete all pins.If you let go over a labelled number, the pin will snap into position. Place an unlimited amount of coloured pins by clicking, dragging, and then releasing them on the number line.Pinch to zoom in and out to see the number line count in tens, hundreds, thousands,….Swipe left and right to scroll along the infinite number line.Often kids are stumped when they see a large number with decimal places such as 30,000.25. They can see just how big numbers get, but also discover more rarely used numbers such as large decimal numbers. Students really enjoy the number line app and even just playing around with it inspires a sense of awe about the sheer infinity of the number world. This way, students can pin a number and then zoom in or out to view where the number is in relation to others - perfect for rounding! Pins are unlimited and can be placed absolutely anywhere along the number line. If enough devices are available, all students can use it for a lesson, or it may become a favourite scaffolding tool for any students with SEN. Teachers can, for instance, project the number line to a whiteboard and use it to model to students. But it works best on touch screen devices such as iPads, tablets, or smartphones as the touch gestures allow for zooming and scrolling. In decimal places, it can count in tenths, hundredths, and thousandths. The scale is animated and shows the appropriate power of 10 as you zoom: counting first in ones, then tens, hundreds, thousands, ten thousands, hundred thousands and up to hundred millions. The zooming function allows you to easily zoom in to the decimals, and out to the millions - giving the user a flexible overall understanding of a number line. Thanks to it being a digital app, you can scroll infinitely along the number line - both into negative and very large positive numbers.
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