Math

Ozobot “Evo” (ozobot.com) is a tiny one-inch diameter robot that can be quickly programmed using a Google Blockly dialect known as OzoBlockly (ozoblockly.com).  This lesson combines the ability to program Ozobot to move freely in a straight line with Voyager’s ability to sense the resulting motion through its range finder.  Students compute the slope of the resulting position versus time graph to determine Ozobot’s velocity.

Ozobot “Evo” (ozobot.com) is a tiny one-inch diameter robot that can be quickly programmed using a Google Blockly dialect known as OzoBlockly (ozoblockly.com).  Combining the ability to program Ozobot to rotate precisely as desired with Voyager’s ability to sense the resulting motion through its collection of sensors, the possibility of a seemingly endless variety of STEM projects becomes a reality.

In this experiment a coasting cart on a flat surface gradually slows down and stops due to rolling resistance.  Two very different surfaces are compared—a carpeted floor and a wood floor.  The purpose of this experiment is three-fold:  (1) to determine the force of rolling resistance, (2) to determine the coefficient of rolling resistance between the cart the surface on which it rolls, and (3) to gain a practical understanding of the meaning of this coefficient.  Voyager's range finder is used to collect data.

Exploration

An accelerometer is a device that will measure acceleration forces. These forces may be static, like the constant force of gravity pulling us towards the Earth’s surface, or the force may be dynamic, like an object moving or vibrating. This lab will show how to use to accelerometer to measure the static angle of a ramp as it rotates between 0° and 90°.

Objective

Exploration 

A unit circle is a circle with a radius of 1, graphed on a Cartesian plane, with the center of the circle at the origin. The relationship between the angle of different radii on the circle and the values of different points on the circle can help in the understanding trigonometric functions.

Objective

Exploration

Barometric pressure is the pressure from the force or weight of air exerted on a surface. The PocketLab’s barometric pressure sensor measures the force of the air molecules that push against the sensor

Objective

In this investigation students will:
1. Design a system that uses PocketLab’s barometer and an understanding of ratios and proportions to build a scale.
2. Use the given supplies to find the weight of unknown objects.

Download PDF for complete lab activity

This lesson has been developed for Grade 8 students.

Please see video link as well as attached Hyperdoc.