4/11/2024 0 Comments Atomic theory timelineStudents will receive Atomic Theory Sort Cards (attached), already cut and in individual groups, with illustrations of the different models of the atom from earliest model to most modern model. Students will be grouped into groups of 3-4. This will lead to the idea that the atom is a particle that is in motion. Through these observations a class discussion can be conducted about the movement of particles (the food dye) through another substance (water). Students should record their observations of the movement of the food dye. The teacher will visit each group placing 5 drops of blue food coloring into the water. Each group will receive a beaker with 200 mL of water. Students will be grouped into groups of 3-4 students. Students will explore the particle model before beginning their atomic theory timelines. Discuss how some of the marbles are outside of the box and that others are inside of the box. Shake the box again until no marbles come out of the holes. Have students observe the marbles that come out the holes. At least one other marble size should be bigger than the holes. Place varying size marbles in the box (make sure that two of the marble sizes can fit through the holes. Come to the conclusion with the students that our understanding of the structure of the atom has changed over time because of the invention of technology and because of the historical contributions of previous scientists.Īfter discussing the question, take out a box that has multiple small holes on all sides. However, states (solid, liquid, gas, and plasma) and types (elements, compounds, and mixtures) will be discussed after The Atomic Theory Timeline.ĭiscuss the question, “Do you think that our understanding of the structure of the atom has changed over time?” Have students form opinions and share out. Explain any time in your life when someone has made an inference about you such as, “You must be smart because you wear glasses.” Have students volunteer to share out any time in their life when they have experienced people making inferences about them (students might site race, religion, income status, etc.)Īlso, discuss that everything around us is made of matter (atoms). They made their discoveries based on inferences.ĭiscuss inferences with students. Remind students that even though we are able to draw a model of an atom now, that in the past there was no technology for scientists to make these discoveries. Possibly have students come to the board to label an atom (nucleus, energy levels, electrons) or have students complete a table sort on atom structure to do a quick formative assessment to make sure that students are prepared to move forward with placing atom models on The Atomic Theory Timeline. It might also be necessary for some students to work with individual table sorts to place the atoms in order.īegin this lesson by reminding students about the atom and its structure. It might be necessary for some students to receive small group/1:1 instruction for memorization of scientists into their correct location on the timeline. Small craft pompoms (or dyed cotton balls) Prerequisites for the module include assessed ability to locate the location of aton structures (nucleus, energy levels, electrons) Key ideas include:Ī) our understanding of atoms has developed over time. This goal supports Virginia SOL PS.2 The student will investigate and understand that matter is composed of atoms. The students will place the historical contribution of each Atomic Theory scientist into an atomic theory timeline, place the correct model of the atom with each scientist, and list the characteristics of each model. The student will distinguish and describe similarities and differences of 2D atomic models from earliest model to the most modern model. This module focuses on how the model of the atom has changed over time using The Atomic Theory Timeline including the historical contributions of the scientists involved. As technology has evolved over time so has the understanding of the structure of the atom.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |