This is the first unit in Pre-Algebra and it covers the Number System and Exponents. This covers integers, rational and irrational numbers, exponents, order of operations, scientific notation.It Includes:19 page note packet for students, with notes and example problems.94 slide PowerPointRecorded YouTube lessons of me teaching the material that you can share with students that are out, or even use for subs.Materials are editable and a flattened version is included in case you just want to prin