Weekly Challenges Worksheets - Free Printable PDF

Browse free printable weekly challenges science worksheets. NGSS aligned with answer keys for classroom, lab activities, and science fair preparation.

Weekly Challenges — Subcategories

Frequently Asked Questions

What does this Weekly Challenges Worksheets cover?

These worksheets cover stem concepts aligned with NGSS standards for K-8 students. Formats include diagrams, vocabulary, short answer, and multiple choice.

Are these worksheets NGSS aligned?

Yes — all worksheets are designed to align with Next Generation Science Standards (NGSS), ensuring they match current curriculum expectations.

Can I use these for science fair preparation?

Yes — science fair templates, lab report guides, and hypothesis worksheets are available and ideal for science fair projects at all grade levels.

Are these worksheets free?

Yes — all worksheets are completely free with no signup required. Click Print for a clean printout optimized for US Letter paper.

Is there an answer key?

Yes — every worksheet includes a complete answer key for quick grading and self-checking.

More Resources

Weekly Challenges — Subcategories

Lower Elementary

Week 1

Upper Elementary

Week 2

Middle

Week 3

Week 4

Week 5

Week 6

Week 7

Week 8

Week 9

Week 10

Week 11

Week 12

Week 13

Week 14

Week 15

Week 16

Week 17

Week 18

Week 19

Week 20

Week 21

Week 22

Week 23

Week 24

Week 25

Week 26

Week 27

Week 28

Week 29

Week 30

Week 31

Week 32

Week 33

Week 34

Week 35

Week 36

Monthly Summary Sep

Monthly Summary Dec

Monthly Summary Mar

Monthly Summary Jun

Seasonal Mega Fall

Seasonal Mega Winter

Seasonal Mega Spring

Seasonal Mega Summer

Completion Tracker Semester

Completion Tracker Year

Certificate Half Year

Certificate Full Year

Week 37

Week 38

Week 39

Week 40

Week 41

Week 42

Week 43

Week 44

Week 45

Week 46

Week 47

Week 48

Week 49

Week 50

Week 51

Week 52