Skye's Safe Skies

Grade 4 students help Skye the otter run an airfield control tower. They round plane altitudes to the nearest 1,000 and 10,000, find the planes flying at about 30,000 feet, work out the real distance between two planes, and solve a five-clue mystery number. Along the way they discover when rounding is good enough and when it can hide two planes that are flying too close together. Every direction is narrated, and every wrong answer gets a spoken hint.

• 13 scenes: an opening, 11 activities and an ending
• Number boxes, multiple choice and a nine-plane multi-select
• A five-clue mystery number puzzle
• Narrated directions and a spoken hint for every wrong answer
• A two-part cool-down that comes back to the real-world rounding question

• Round real data (plane altitudes) to the nearest 1,000 and 10,000, and use the rounded values to describe a situation.
• Decide when rounded numbers are good enough and when only the exact numbers are safe.
• Explain how two people can reach different conclusions from the same numbers by rounding to different places.