In the advent of the emerging technologies, globalization and innovation, traditional way of learning may not keep up with the needs of the current digital natives. The evolution of education from Education 1.0 to Education 4.0 can be seen to have significant differences in terms of curriculum and infrastructure. Education 4.0 emphasizes more on the self-directed learning assisted by the use of technology. This heutagogical approach may still use the technology of E-learning in improving the learning mechanism. This study focuses on a specific educational tool to assist primary school children in self-directed learning according to their own pace and levels of learning. The features of the web educational tool is observed and assessment questions were distributed to a number of respondents as a preliminary test. The preliminary testing was done to five respondents from different background. Think aloud technique was used to observe and the feedback is recorded for further analysis. Outcome of the usability test proves that different background of respondents have different levels of difficulty. School children that rarely use the Internet was having more difficulties to use the tool as compared to other children who frequently use the Internet. Results of this study will also serve as a guide to the Education 4.0 developers in understanding the needs of the targeted user whilst providing a better platform for self-directed learning.