diff --git a/contents/core/dl_primer/images/png/basic_perceptron.png b/contents/core/dl_primer/images/png/basic_perceptron.png
new file mode 100644
index 00000000..68abe5ae
Binary files /dev/null and b/contents/core/dl_primer/images/png/basic_perceptron.png differ
diff --git a/contents/core/dl_primer/images/png/forward_backward_propagation.png b/contents/core/dl_primer/images/png/forward_backward_propagation.png
new file mode 100644
index 00000000..2847cff8
Binary files /dev/null and b/contents/core/dl_primer/images/png/forward_backward_propagation.png differ