式 means ceremony; method and is a JLPT N3 kanji. It has 6 strokes and uses the tied arrow radical (弋).
Stroke order · 6 strokes
On'yomi (音読み)
シキ
Kun'yomi (訓読み)
—
Radical
弋 · tied arrow
Strokes
6
How to remember 式
A craftsman's tool (工) combined with the mold of a rule (弋) — an event arranged according to rules becomes a ceremony. 結婚式 (wedding), 卒業式 (graduation ceremony).