The purpose of this research is to find out if "Dynamic Assessment" improves knowledge recall and knowledge construction. The science topic, "Properties of Aqueous Solutions", which is taught in the sixth grade of an elementary school, is used as a subject matter for the assessment. In "Dynamic Assessment" is used and which requires the teacher to give immediate feedback and explanation to the answers given by pupils. The research is carried out with an experimental group using "Dynamic Assessment" and a control group where the teacher returns the tests with only indications of whether answers are true or false. A post-test is conducted to measure if there was any difference in the knowledge recall ability and knowledge construction of pupils in these two groups. In addition, the pupils are classified based on their performance in knowledge recall and knowledge construction in the pre-test. The effectiveness of the "Dynamic Assessment" in the different groups is also considered. Results show that "Dynamic Assessment" 1) is effective in improving knowledge construction, and 2) improves the performance in questions that test knowledge construction in the group that has a higher and lower knowledge construction.