Help the alien "Zork" navigate through an asteroid belt by calculating the distance.
Provide students with two "alien fuel cells" (numbers like igry dlia 2 klassa slozhnye primery innoplanetaninami
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. Help the alien "Zork" navigate through an asteroid
). They must first add these together and then determine how much more is needed to reach using regrouping. 2. Deep Space Subtraction with Regrouping igry dlia 2 klassa slozhnye primery innoplanetaninami