Kidz Learn Rocks vs CloudLabs Crane

Kidz Learn - Rocks is an educational app about different types of rocks found in nature. This app categories and provides a detailed explanation on rocks, types of rocks, and the app also has a video on rocks.This app is entertaining as it has fun and simple animation while describing the external and the internal factors that cause different rock formation. There is also a fun quiz section with questions to review one's knowledge on rocks.

In this practice, you will apply a quadratic inequality to model the load that can be withstood by a freight elevator. You need to solve the inequality, it will have two solutions that represent the maximum and minimum loads that can be withstood by the elevator. In this application, you will use only natural numbers, as mass cannot be negative. To carry out the practice, you will be given a freight elevator with a basket, an electric motor, a scale and masses of different values.