She has been using Desmos, which is pretty good. I'll tell her about Geogebra. Creating interactive demonstrations can be very helpful. Sequences and series see

She has been using Desmos, which is pretty good. I'll tell her about Geogebra. Creating interactive demonstrations can be very helpful. Sequences and series seem to be the latest topic students are having difficulties with. The underlying logic is good, but being able to visualize the topic and play with parameters is important as well. Thanks!