This PDF file of Engage NY math materials will help you teach the first unit of math to third grade students. This is precisely aligned with the curriculum, made to teach with and use every day with the first unit.
If you have a smart board, simply import into the software or write right over the slides. Absolutely no prep other than the copies you will make directly out of the curriculum.
Enjoy spending the first unit in peace knowing that these slides include each day and a thoughtful presentation of material. Enjoy!