DK Find Out! Numbers

Includes decimals, percentages, Pi, and positive and negative numbers.

Crash Course: Study Hall Algebra #3 - Negative Numbers and Arithmetic
Crash Course

In this episode of Study Hall: Algebra, James walks us through a bit of history and practical math.

Mathalicious: Bookie Nights

In this lesson, students add and subtract positive and negative numbers to explore two popular types of bet: the over-under and the spread.

youcubed: Sidewalk Line Dance (K-8)
youcubed (Stanford University)

This is a fun sidewalk chalk activity that gets everyone moving and having interesting conversations about numbers!

NRICH: Incey Wincey Spider
NRICH (University of Cambridge)

You’ll need two dice to play this game against a partner. Will Incey Wincey make it to the top of the drain pipe or the bottom of the drain pipe first?

NRICH: Connect Three
NRICH (University of Cambridge)

Can you place three of your counters in a straight line before your opponent does?