LEGO Education BricQ Motion will give your students an understanding of forces and motion as they plan and conduct investigations. There are 2 kits available.

LEGO Education BricQ Motion Essential for elementary students.

LEGO Education BricQ Motion Prime for middle school students. 

A good place to start learning robotics is the site of LEGO Education.

https://education.lego.com/en-us/lessons

A very nice surprise from Lego Education is the release of Lego Mindstorms 51515 which is based on SPIKE !!!

https://www.lego.com/en-us/product/robot-inventor-51515