Use "Alien Base 10" blocks (visual aids) to show how Zork "breaks down" a ten to subtract from the ones column. For example, to solve , you must borrow from the tens to turn 3. Galaxy Comparisons: Greater Than / Less Than Aliens are collecting "Star Gems" from different planets.
Subtract the weight of asteroids to clear a path. Complex Example: igry dlia 2 klassa slozhnye primery innoplanetaninami
Students solve a complex addition problem on one side and a subtraction problem on the other, then place the alien "mouth" ( is greater than ) facing the larger number. 4. Interactive Visualization: Number Line Navigation Use "Alien Base 10" blocks (visual aids) to