Gallery [Show as slideshow] Planting trees with students at Mustard Seed Secondary School Examining the supplies for science experiments Students designing an experiment to test whether pendulums can be used to find water. Upper campus Two classrooms. The dividing wall is removed because of exams. A basketball court that we helped level so that Mustard Seed students can play. Juggling lessons Ben showed the kids our solar system on his iPad. Drinking Marua with locals. Marua is a local brew made from cassava and millet that is fermented in the ground. You drink Marua with others from long straws made from guinea fowl feathers.