First Grade Science Frameworks

LS1. From Molecules to Organisms: Structures and Processes

1-LS1-1: Use evidence to explain that (a) different animals use their body parts and senses in different ways to see, hear, grasp objects, protect themselves, move from place to place, and seek, find, and take in food, water, and air, and (b) plants have roots, stems, leaves, flowers, and fruits that are used to take in water, air, and other nutrients, and produce food for the plant.

Clarification Statement

  • Descriptions are not expected to include mechanisms such as the process of photosynthesis.

1-LS1-2: Obtain information to compare ways in which the behavior of different animal parents and their offspring help the offspring to survive.

Examples of behaviors could include the signals that offspring make (such as crying, cheeping, and other vocalizations) and the responses of the parents (such as feeding, comforting, and protecting the offspring).


LS3. Heredity: Inheritance and Variation of Traits

1-LS3-1: Use the information from observations (first-hand and from media) to identify similarities and differences among individuals plants or animals of the same kind.

Clarification Statement

  • Examples of observations could include that leaves from the same kind of plant are the same shape but differ in size.
  • Inheritance, animals that undergo metamorphosis, or hybrids are not expected.


PS4. Waves and Their Applications in Technologies for Information Transfer

1-PS4-4: Use tools and materials to design and build a device that uses light or sound to send a signal over a distance.

Clarification Statement

  • Examples of devices could include a light source to send signals, paper cup and string “telephones,” and a pattern of drum beats.
  • Technological details for how communication devices work are not expected.