Base-10 Blocks on Transparent Background that students and teachers can easily manipulate on Google Slides, and highlight. Over 100 transparent .png files you can use! Check out demo on YouTube.
These are some review slides I created to show as morning work or for the beginning of our math period as a way to quickly review concepts with the students as a whole class. Allowing students to complete this within a 15-20 time period and allowing 10-15 minutes to review with them is suggested. DOWNLOAD A COPY of the slides to your personal folder for use.