Objectives This lesson will help second-grade students see the connections between mathematical operations such as addition or subtraction and measurement activities that are important for various sciences. Overall, it is necessary to achieve the following objectives:  1. Students will learn to identify the position of an object relative to other objects. In particular, they will determine the distance between small cars.  2. They will learn to identify the position of an object by using two mathematical operations, addition and subtraction.  3. Learners will train to use measurement units. In part, these goals are based on the standards identified by the National Science Teachers Association, according to which teachers should encourage students to use the skills derived from various areas, especially algebra and geometry (1). Additionally, one should focus on the strategies identified by the National Association for the Education of Young Children; this organization emphasizes the idea that teachers should use various toys or other manipulatives to help children understand the motion of objects and their positions relative to one another (National Association for the Education of Young Children 13). Relevant resources The students will need to use the following materials 1) worksheets; 2) rulers; 3) posters depicting the movement of cars; and 4) small cars that will be regarded as moving objects. Differentiation While providing instructions, I will make accommodations for learners who have different learning styles. In particular, I will rely on charts depicting the movement of vehicles. Furthermore, I will encourage students to manipulate small cars because this manipulation is useful for people who can benefit from motor learning. Moreover, much attention will be paid to the needs of learners who may struggle with some disabilities such as visual impairments. In particular, these learners will be seated right near the teacher. Problem-solving At first, I will introduce various units of measurement such as meters, decimeters, and centimeters. Moreover, students will learn to measure the distance between objects such as cars. In turn, students will need to perform several tasks. At first, they will need to determine the total distance covered by an object through a series of moves in the same direction. They will do an addition to perform this task. Additionally, they will determine the distance between two objects that can move in the same or opposite directions. They will do subtraction to complete such tasks. Additionally, learners will use rulers to see that measurements confirm the results of their calculations. Science processes During this lesson, learners will be engaged in several science processes. In particular, they will observe the direct movement of objects. Moreover, they will use rulers to measure distances between small cars. Additionally, they will test a hypothesis according to which one can determine the distance between objects by using subtraction. It should be mentioned that teachers help learners see that distance between objects can be identified by certain mathematical operations (Humphreys 31; Maden 63). Manipulatives In this case, the main manipulatives will be rulers and small cars. One should keep in mind that children can better understand or visualize the movement of an object or the distance between objects if they