# News

By Raphael Kohlberg

The friendly neighbor owls' eggs are all scrambled! In this 2nd grade worksheet, students solve equations and use the clues to find out which egg belongs to which owl!

Photo By: The Enlightened Elephant

By Raphael Kohlberg

As teachers, we all know that 1/3 = .33 repeating. But why is that the case? This lesson gives your students the opportunity to discover for themselves why decimals equal their fractional representation.

By Raphael Kohlberg

The written algorithm of subtraction with regrouping can be pretty confusing to teach and to learn. What does crossing out the number mean? Carrying the one?

By Raphael Kohlberg

We believe Digi-Block is the best base-10 math manipulative. See how Digi-Block stacks up against the leading base-10 block.

Photo By: Number cubes / Jimmie / CC BY 2.0

By Raphael Kohlberg

This interactive decimal lesson plan allows students to visualize and manipulate decimals, using their critical thinking skills to achieve understanding.

By Raphael Kohlberg

Multiplying by ten has a simple trick: just add zero. This lesson visually shows students why adding a zero works.

By Raphael Kohlberg

Top 5 games and activites for teaching your students the concept of infinity.

Photo By: Mommy, You're Going To Be My Wife One Day, Right? / Lotus Carroll / CC BY 2.0

By Raphael Kohlberg

Base Ten allows us to think about quantities large or small in an organized way. It helps us understand the magnitude of a number and lets us efficiently do operations.

By Raphael Kohlberg

Photo By: Brain / dierk schaefer / CC BY 2.0

By Raphael Kohlberg

The decimal point baffles many children. They often don’t know what it’s for and what the numbers that follow it represent. It doesn’t have to be this way!

By Raphael Kohlberg

By Raphael Kohlberg

Photo By: Planet / Paree / CC BY 2.0