ScratchJr is an excellent coding app for making interactive Maths games. Student can create a variety of maths content in areas like addition, subtraction, number lines, odd and even and place value.
Below are iPad templates for Year 1, 2 and 3. Students create their game then screenshot or screencast the project and place it into the template. These templates can be downloaded by teachers and edited to suit individual student needs. Teachers may wish to view a tutorial on how to create these projects.
Year 1 ScratchJr Maths Template (Book Creator)
Year 2 ScratchJr Maths Template (Book Creator)
Year 3 ScratchJr Maths Template (Pages)