Have you mentioned we have only 1 Katakana left with 2 strokes??
The last one is;
カ【ka】
Want to check the stroke order with the movie? Click here
This is one of the group that Katakana and Hiragana have same origin.
So, now let's practice to write Hiragana's 【ka】
か【ka】
Want to check the stroke order with the movie? Click here
Then there is a Kanji, that is the same to Katakana's カ.
力【chikara】=power
Want to check the stroke order with the movie? Click here
It represents a powerful arm.

Then, there are similer looking one.
刀【katana】=sword
Want to check the stroke order with the movie? Click here
It came from the symbol of a sword.
Then this is the first letter for you to learn from the collection of Kanji for Grade 2 student. :)
The sword image is from Wiki Commons by MathKnight
The last of all, let's check today's effort.