It's been a busy week wrapping up our Mars Rover 2020 work! We've found that learning about Mars and NASA's mission has led us to a better understanding of our own planet, too. Our next project has us revitalizing the keyhole gardens around campus, so we'll explore much closer to home. SBLC mathematicians are continuing to develop an understanding of multiplication and division. We've created arrays of all sizes and are becoming experts at representing these two operations with a variety of representations. We're also considering that counting by fives is a great strategy for a problem like 5 x 9, but that we also need strategies that work for bigger numbers. For the 9s, we like that we can "overshoot" the number and multiply by 10, then take away 5. We can represent this in a multistep equation as (5 x 10) - 5 = 45. Since 10 is such a compatible number, we also use it to help with the multiples of 5. You can ask your SBLC mathematician about multipl...