Chef of volume is the name of my e-Publication, inspired by a task where students have to make sandwiches of different geometric shapes. It is designed for third grade of Primary Education to learn about some mathematic content throughout a cross curricular approach. Its main objective is to make students differentiate area from volume while doing web searches in small groups and using online tools for presentations and a video creation.
This website can also be really useful for those teachers who want to teach without textbooks.
Go ahead, some ideas have been included!