There are many shapes and digital manipulatives for students to explore from within Equatio Mathspace.  Click on the ‘Smart Shapes’ drawer, and then select ‘Number Line.’  Then with your mouse, click and drag in the open space to create your number line.  Keep in mind that ‘Smart Shapes’ give the user lots of flexibility in the menu.  You can add segments, change the stroke style, and even adjust the width to your liking.  All ‘Smart Shapes’ have very different menu options for users so you can customize your ‘Smart Shapes’ to your preference.