STRAIGHT LINE GRAPHS

These two videos will help you to understand the linear equations:

Eratosthenes and the Size of the Earth

Tomorrow we will do the last activity of the integrated unit "Upcycling with Mondrian". In this activity we will apply the Eratosthenes' idea for measuring the Earth's circumference, but we will use new technologies to get the data we need.

Here you are the activity

Function Carnival

Today we began the unit 6 about functions.

 Click in this code pfu4 to go to the activity "Function carnival".

SOLVING SYSTEMS OF EQUATIONS BY ELIMINATION

In this video the Professor Von Schmohawk explain how to solve a system of equations using
the elimination method.

If you want to know more about the elimination method, you should see this another video:

THE TORTOISE AND THE HARE

Today we have begun a new unit about systems of linear equations with a new version of the famous fable about the race between the tortoise and the hare. Here you are the video:

Solving Motion Problems with Linear Equations

In this video you will find the examples 4 and 5:

SOLVING PROBLEMS USING EQUATIONS

In this video you can find the examples 1 and 2 we saw in class this morning:

You have to do the example 3 as homework. This example is in the minute 6:21 of the following video, but you can go to it directly clicking in this link: