The use of plants as materials to control pests was known by traditional communities before the introduction of synthetic pesticides. The use of botanical pesticides has received important attention along with the negative impacts of using synthetic pesticides on health and environment. In the world, Indonesia is the seventh-largest country with the number of species of plant. There are estimated more than 20,000 spesies and 25 percent of them are flowering plants. This study aims to determine the effectiveness of several native plants of Karo Regency, that have the potential as botanical pesticides to control pests in horticultural crops. Botanical pesticides are made by extraction methods, and indicator plants for observing pest attacks are potatoes. The results based on the inventory and exploration at Karo Regency, there are 12 species of plants that are most often used by farmers as botanical pesticides to control pests in horticultural crops from family Meliaceae, Solanaceae, Caricaceae, Asteraceae, Poaceae, Annonaceae, Rubiaceae, Euphorbiaceae and Amaryllidaceae. Botanical pesticide significantly reduced pest attack on plants, reduced population of Myzus pesicae and Phthorimaea operculella and increase potato yield. The most effective of botanical pesticides to control pests on potato plants were tobacco leaf extract, lemongrass extract, and soursop leaf extract, respectively.

This study aims to determine the effect of giving rewards on learning outcomes in fifth grade mathematics subjects at SDN 094097 Simpang Pongkalan Tongah. The research method used is an experimental method with quantitative research. To obtain the necessary data in the form of a test with a total of 40 questions. The research at SDN 094097 Simpang Pongkalan Tongah in class V was carried out from 10 to 11 May 2021. The number of research samples was 16 students based on the saturated sample technique. The results of statistical calculations show that the ability of students in answering post-test questions with the reward method is included in the very good category with an average value of 84.06 in the very good category. Meanwhile, the students' ability to answer the post-test questions with the demonstration method was included in the good category with an average value of 70.31 in the good category. This study used the normality test with the results of 0.200> 0.05. Then the homogeneity test with a significance value of 0.344 > 0.05. Furthermore, hypothesis testing is to compare the value of tcount with ttable. Obtained the value of tcount = 4.111 while ttable = 1.746. Because tcount > ttable (4.111 > 1.746) then Ha is accepted and Ho is rejected. Through the t test, it can be concluded that there is a significant effect between giving rewards to learning outcomes. Keywords: Giving Rewards, Mathematics, Learning Outcomes