• Teaching support assistant of Calculus II for undergraduate students at Clarkson University, USA (Fall 2019- present)
• Teaching Assistant of the independent sections of Intermediate Algebra for undergraduate students at Western Illinois University, USA (Fall 2018- Spring 2019)
• Tutor in Calculus, Algebra and Statistic help centers at Western Illinois University,USA (Fall 2017- Spring2019)
• Teaching support assistant of Creative Perspectives in Mathematics at Western Illinois University, USA (Fall 2017)
• Tutor for Mathematical Modelling at University of Kelaniya, Sri Lanka. (02.23.2016-09.16.2016)
•  Tutor for Calculus II at University of Kelaniya, Sri Lanka.(09.26.2016-02.24.2017)

Mathematical modeling, Biomathematics 

 Publications

• Silva SHDS, Iluppangama IAMS and Piyadasa RAD, 2016. Elementary proof of Fermat’s last theorem for n=4. Proceedings of the Wayamba University International Conference, Sri Lanka, 19-20 August 2016(WinC). pp. 42.
•  S.H.D.S. De Silva and D.K. Mallawa Arachchi, 2016. How to pump a swing?Proceedings of the peradeniya International Research Sessions, Sri Lanka, Vol.20, 4th & 5th November 2016(IPURSE). pp. 279.

Projects/Research

• Research on How to pump a swing( Final year research project)
• Research on Elementary proof of Fermat’s Last theorem for n=4.
• Develop a project for “Shop Management System” by using Object Oriented Programming and Designing.

• Reading for PhD in Mathematics at Clarkson University, USA

  Duration : July 2019 – May 2024

  Subjects : Applied Mathematics and Pure Mathematics 

• Successfully completed Certificate in Accounting and Business I. The Institute of Chartered Accountants of Sri Lanka (2012).

• Successfully completed Certificate in Information and Communication Technology. District Nanasala training centre- Ambalangoda, Sri Lanka (2011).

• Successfully completed Certificate in English Language – Intermediate Level. IHRA, University of Colombo, Sri Lanka (2013 July- 2014 January).

• Successfully completed Certificate in Computer Literacy. Information and Communication Technology Centre, University of Kelaniya, Sri Lanka (2013).