Jonathan worked on his lesson about weathering by doing two brain pops. Jonathan studied the effects of wind on water and the effect of wind on mountains. He learned that mountains that are rounded became that way after thousands of years of sandblasting by the wind. Jonathan answered quetions about weathering caused by the expansion of ice. He studied the effect of plant roots breaking up solid rock into smaller pieces. Jonathan also learned the concepts of weathering due to rock slides and glaciers. Jonathan answered the advanced questions in the Brain Pop where there are several true answers to choose. Jonathan also reviewed sinkholes and we introduced the concept of carbonic acid and its effect on sedimetary rock forming caves. We wil begin studying caves and eclipses in the next few lessons.