diff --git a/docs/static/mb/lessons/seis_challenge04.png b/docs/static/mb/lessons/seis_challenge04.png
new file mode 100644
index 00000000..3373604c
Binary files /dev/null and b/docs/static/mb/lessons/seis_challenge04.png differ
diff --git a/docs/static/mb/lessons/seis_challenge05.png b/docs/static/mb/lessons/seis_challenge05.png
new file mode 100644
index 00000000..47e2c79d
Binary files /dev/null and b/docs/static/mb/lessons/seis_challenge05.png differ