It is undeniable that education is a trade-off between different subjects. However, we contend that maths is one which we want to protect. It is a fundamental subject which is of use in many others, as well as teaching children how to think about problems. (Debating lessons are a great idea, but should replace something else, like Art.)  Teaching maths as part of science just wastes time, as all different science subjects need the same maths. All this will do is add to the burden on teachers, as they will have to coordinate with each other to make sure the class has covered the right maths for that point in the course. Moreover, this will never be as effective as having a whole class for maths.