The e-book Doudan School ‘GAINLESS’ and the boardgame ‘GAINLESS’ integrate interactive features of the e-book with group activities to enhance the flexibility of classroom teaching.

	An interesting story is adopted to bring out an appealing and persuasive introduction.
	Computer simulations are created to assist teachers in explaining the fraudulent operation of gambling.
	Basic concepts like ‘probability’, ‘expected value’ and ‘illusion of control’ are explained to help students analyze gambling in a more rational attitude.
	Computer animation is employed to demonstrate the procedures of group activity, thus encourage students’ participation.
	Discussion questions are designed to help students reflect on the risk of gambling.
	Teachers are able to add teaching resources, such as news clippings to suit their school-based teaching purposes.