A Dynamic Approach to Teaching Trigonometry. - Ellen T. Kamp; Anjo Anjewierden; Ton de Jong (ICCE, 2013)

Ziggy: very interactive trigonometry. - Anjo Anjewierden; Ellen T. Kamp; Ton de Jong (CICM Workshops, 2013)

Archimedes remote lab for secondary schools. - Javier García-Zubía; Ignacio Angulo; Gabriel Martinez-Pieper; Diego López-de-Ipiña; Unai Hernández; Pablo Orduña; Olga Dziabenko; Luis Rodriguez-Gil; Siswa A. N. van Riesen; Anjo Anjewierden; Ellen T. Kamp; Ton de Jong (exp.at, 2015)