In order to plan an effective lesson plan unit, you'll need an abundance of tools and worksheets for teaching various skills and themes. As a first year teacher, I needed to know what was out there, so that I could eventually formulate my own ideas. Who says you need to build everything from scratch? And most importantly, why should you pay any money when there is so much stuff online?
I'm always on the look out for free worksheets. So, I think I have found an appealing site of free worksheet makers for a first year teacher audience. Maybe seasoned teachers would also find these free worksheet makers refreshing. In fact, you can surf on this site forever.
For starters, you'll need weekly assignment generators. Then, you'll most likely need to plan your lesson units. This should help you get started. Continue navigating through this free online teacher resource that I've used countless number of times for my own classes over the years.
When generating your worksheets always remember the skills you want to teach and any enabling skills that are needed before asking students to do let's say, a research project. You'll need to check-up on how well they've acquired their knowledge through a brief quiz or test. A lesson unit always has at least one small mini assignment and homework. You may want to implement a project in lieu of mini-assignments.
Best of luck!