The Spaced learning environment depends on presenting the content on three repetitions, with breaks between each repetition of (10) minutes. The adaptive activity is presented in the second stage of repetition, taking into account the learning style and providing scaffold during the performance of the activity; The aim of the research is to investigate the impact of the interaction between adaptive activities and scaffold style in the Spaced learning environment on developing interactive book design skills and engaging in learning among educational technology students. The analytical descriptive approach was used, the experimental approach, and the steps of the research included selecting a sample of (120) students from the third year students of the Education Technology Division in the Faculty of Specific Education, Zagazig University. Where the experiment was conducted on four experimental groups, the first taught in the style of scaffold (immediate) and adaptive activity according to the (avoidant) learning style, the second in the style of scaffold (immediate) and adaptive activity according to the (participatory) learning style, the third in the style of scaffold (delayed) and adaptive activity according to the (avoidant) learning style, the fourth with the (delayed) scaffold and adaptive activity according to the (participatory) learning style. The measurement tools were the achievement test, the observation card, the product quality assessment card and the learning engagement scale. The results of the research resulted in the presence of statistically significant differences at the level of significance ≤ (0.05), between the average ranks of the students of the experimental groups in the cognitive achievement test in favor of the second experimental group (immediate support / adaptive activity according to the participatory learning method), and in the observation card associated with the aspect Performance, final product quality card, learning engagement scale for the fourth experimental group (delayed support / adaptive activity according to the participatory learning style). Key words : Adaptive Activities - Scaffolding Pattern - Spaced Learning Environment - Interactive Books - Engaging in Learning.