Stalactites and stalagmites are two coneshaped mineral formations that form in caves. stalactites hang down from the ceiling and stalagmites rise up from the cave floor. what causes cave minerals to form in this way?
existing minerals change into new minerals when nearby molten rock causes an increase in temperature.
molten rock cools and hardens as it reaches earth's surface.
groundwater carrying dissolved materials combines with surface water and causes minerals to precipitate out of solution.
groundwater heated by molten rock reacts with minerals in the rock to form new minerals.

Groundwater carrying dissolved materials combines with surface water and causes minerals to precipitate out of solution.
stalactite  and stalagmites form when dissolved salts in ground water drips down on the same spot over centuries. from the roof leaving the salt residue behind and on the ground causing a constantly growing mound of minerals.

Schools are being forced to embrace computers. unlike their "digital immigrant" teachers, these students are "digital natives", born into a world where technology is an integral part of everyday life. almost every student has access to a multitude of computers, laptops and tablet devices. it would be crazy to assume an assignment would  notbe written on computer in this day and age.many schools now have a 1-to-1 computer policy, and many districts and states in the united states have mandated computers or ipads across the state for every student,  including los angeles, the second largest school district in the country.but the thing is, when they tried it in la, it wasn't the success they hoped for. that's because the tablets weren't used as much as they expected. rather, it appeared there was a gap between the digital native's love of technology and their use of it in the classroom.this conflicted relationship with computers is also underscored by much of the literature on education. it is also highlighted in professional development and conferences such as  edutech.