Logic Lab

Logic Lab

Launched in 2026, Logic Lab is a math and logical-thinking program at The Blue Mountains School, run in collaboration with Mr. Arvind, a parent of the school who volunteers his time to bring mathematical puzzle-solving to our students. Logic Lab is deliberately a mixed-age-group program, bringing together students from Grade 2 through Grade 8 to take on the same question at the same time — because reasoning clearly is a skill every grade can practice together, not something that waits for a particular grade level.

Every so often, Mr. Arvind sets a new puzzle for the whole group. Students are encouraged to work through it and share how they arrived at their answer — on Logic Lab, the explanation counts for just as much as the answer itself. A selection of these questions, and the thinking behind them, will be featured here as the program continues through the year.

The Hen-and-a-Half Riddle

Math Battle

"If a hen and a half lays an egg and a half in a day and a half, how many eggs will six hens lay in six days?"

Read the full puzzle & join the discussion →

The Goose and the Flock

Math Battle

A lone goose was flying in the opposite direction from a flock of geese. He cried: “Hello, 100 geese!” The leader of the flock answered: “We aren't 100! If you take twice our number and add half our number, and add a quarter of our number, and finally add you, the result is 100, but… well, you figure it out.”

Help the goose solve the size of the flock.

Read the full puzzle & join the discussion →