Help in writing the word "ippai"

Let's Learn Japanese with Hiragana and Katakana
Cambridge Scholars Publishing
By Masumi Kai
Illustrations by Ms. Yi-Wei Chiu
http://www.cambridgescholars.com/download/sample/59410
(See the Last Page)
STOPPED SOUNDS
Stopped sounds are indicated by small ‘つ’ (tsu). ‘つ’ is quarter size.