1. Example of Open-ended Problem
By:
Fadjar Shadiq
SEAMEO QITEP in Mathematics

2. ABCD and BEFG are squares, AB = 10 and BE = 20
Open Ended Problem
Find the area of triangle AFH. (Closed Problem).
Find different ways/ strategies in finding the area above.(Open Ended Problem). K G H F D C E A B
ABCD and BEFG are squares, AB = 10 and BE = 20

3. Problem
The product of two positive integers is even, and divisible by 4. Is their sum odd or even? Explain.
The product of two positive integers is even, but not divisible by 4. Is their sum odd or even? Explain.
Gunakan setiap angka 1, 2, 3, 4, 5 dan 6 tepat satu kali untuk membentuk dua bilangan positif tiga angka.
Tentukan bilangan positif terkecil yang merupakan selisih dua bilangan tadi.
Tentukan bilangan positif terbesar yang merupakan hasil kali dua bilangan tadi. 

4. The End
Thank You
Very Much