Find the Decimal Numbers on the Number Line
Numbers can be represented on a number line.
Besides whole numbers 1, 2, 3 and so on, decimal numbers also exist between 1 and 2.
Use Zoom In (middle scroll mouse button) to see what numbers there are.
You can click on the point A and drag the point to change its position, with your mouse.
So try to locate 1.1, 1.25, 1.585
Do you think 1.5859 exist? Show your teacher where you think that might be on the number line.
Other examples of number line tools (non Geogebra)
https://www.mathsisfun.com/numbers/number-line-zoom.html
A comprehensive number line tool at
https://apps.mathlearningcenter.org/number-line/
See http://www.antonija-horvatek.from.hr/applets/decimal-numbers/1-Decimal-numbers-on-the-number-line.htm for Antonija Horvatek's excellent webpage lesson on Decimals on a number line.