Jan 24, 2016 - Math Circle 2.0

Stone distribution

Anya brought 12 beautiful stones.  If we were going to distribute the stones to 3 friends, how many stones would each friend receive. How many stones would each friend receive if we were going to distribute to only 2 friends.

Third dimension

We played battleship on a grid.  How would we track an airplane by adapting the grid system?

Making shapes with coins

We tried to make shapes with a defined number of coins on the grid.  We could make squares and rectangles with a certain number of coins.

Jan 17, 2016 - Math Circle 2.0

Greater than or less than review

The students compared two numbers and used the greater than, less than, and equal signs.  The large dinosaur helped us understand the sign direction.

Battleship with squares and rectangles

We reviewed coordinates on the grid.  Darrin hid a square battleship and a rectangle battleship on the grid.  The students used their cooridinate skills to find the two battleships.

Jan 10, 2016 - Math Circle 2.0

Number line addition and subtraction

Used a coin to "hop" on the number line. Hopped to the right for addition (+).

Hopped to the left for subtraction (-).

Introduced plus and minus sign.

Greater or equal expression

Dinosaurs are very hungry.  They will eat the pile of coins that is larger.  Their mouths also look like a greater than (>) or less than (<) sign.  The open mouth always points to the larger quantity.

Rectangles, squares, and area

We placed four markers on a grid to make a rectangle and a square.  The rectangle and square had the same area since four grid sections were covered in both cases.

We made a rectangle with five markers on the grid but could not make a square.  Some number of markers can make squares while others cannot.  Interesting.....