Nonprofit · EIN 94-2862140
MATH-SCIENCE NUCLEUS
Tax-exempt · FREMONT, CA 94536
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $1,756,800 | $2,089,994 | -$333,194 | $2,764,720 | $0 | $2,764,720 |
| December 31, 2024 | 990 | $3,309,434 | $2,076,705 | $1,232,729 | $3,097,914 | $0 | $3,097,914 |
| December 31, 2023 | 990 | $657,123 | $681,249 | -$24,126 | $5,562,636 | $0 | $5,562,636 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $1,389,525
- of which government grants
- $1,381,525
- Program service revenue
- $338,465
- Investment income
- $28,810
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $331,944
- Salaries, compensation and benefits (total)
- $386,242
- Professional fundraising fees
- $0
- Occupancy
- $36,000
- Travel
- $7,152
- Program services (functional)
- $2,089,994
Balance sheet and other
- Total assets, start of year
- $3,097,914
- Total assets, end of year
- $2,764,720
- Total liabilities, end of year
- $0
- Net assets, end of year
- $2,764,720
- Net assets without donor restrictions
- $2,163,438
- Net assets with donor restrictions
- $601,282
- Gross receipts
- $1,756,800
- Employees
- 7
- Volunteers
- 0
- Year formed
- 1982
- State of legal domicile
- CA
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Hagos Tewolde Negusse | Animator Web Design Key employee | 40 | $83,200 |
| Art Williams | Restoration Specialist Highest-paid employee | 40 | $83,200 |
| Althea Weber | Collection Manager Key employee | 40 | $56,160 |
| Susana Esqueda | Environmental Scientist - educator Highest-paid employee | 25 | $26,641 |
| Gaetano Palazzo | Associate Paleontologist Highest-paid employee | 20 | $25,623 |
| Selamawit Tesfaldet | associate museum shop Highest-paid employee | 20 | $22,790 |
| Kbrom Nugse | restoration aide Highest-paid employee | 20 | $22,720 |
| Monica Esqueda | Environmental Scientist educator Highest-paid employee | 30 | $11,610 |
| Joyce R Blueford | Board President Officer | 60 | $0 |
| Debbie Davidson | Vice President Board Officer | 30 | $0 |
| Karen Anderson | Board Member Officer | 10 | $0 |
| David Stronk | Board Member Officer | 2 | $0 |
| Pat Gordon | Board Member Officer | 2 | $0 |
| Grechen Roeding | Board Member Officer | 2 | $0 |
| Ken Miller | Board Member Officer | 10 | $0 |
990 for the year ended December 31, 2024: 14 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| Art Williams | Restoration Specialist Highest-paid employee | 40 | $66,560 | $10,046 |
| Hagos Tewolde Negusse | Animator Web Design Key employee | 40 | $66,560 | $2,888 |
| Althea Weber | Collection Manager Key employee | 40 | $52,000 | $3,846 |
| Gaetano Palazzo | Associate Paleontologist Highest-paid employee | 20 | $38,471 | $0 |
| Monica Esqueda | Environmental Scientist educator Highest-paid employee | 30 | $17,550 | $0 |
| Kbrom Nugse | restoration aide Highest-paid employee | 20 | $3,600 | $0 |
| Selamawit Tesfaldet | associate museum shop Highest-paid employee | 20 | $3,600 | $0 |
| Joyce R Blueford | Board President Officer | 60 | $0 | $0 |
| Debbie Davidson | Vice President Board Officer | 30 | $0 | $0 |
| Karen Anderson | Board Member Officer | 10 | $0 | $0 |
| David Stronk | Board Member Officer | 2 | $0 | $0 |
| Pat Gordon | Board Member Officer | 2 | $0 | $0 |
| Bruce Roeding | Board Member Officer | 2 | $0 | $0 |
| Ken Miller | Board Member Officer | 10 | $0 | $0 |
990 for the year ended December 31, 2023: 14 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| Art Williams | Restoration Specialist Highest-paid employee | 40 | $62,400 | $4,537 |
| Hagos Tewolde Negusse | Animator Web Design Key employee | 40 | $62,400 | $3,647 |
| Althea Weber | Collection Manager Key employee | 40 | $47,840 | $2,765 |
| Monica Esqueda | Environmental Scientist educator Highest-paid employee | 30 | $33,085 | $0 |
| Gaetano Palazzo | Educator Exhibits Highest-paid employee | 32 | $4,032 | $0 |
| Caleb Wills | student helper Highest-paid employee | 5 | $3,820 | $0 |
| Stefani Himes | educator Highest-paid employee | 10 | $2,553 | $0 |
| Joyce R Blueford | Board President Officer | 60 | $0 | $0 |
| Debbie Davidson | Vice President Board Officer | 30 | $0 | $0 |
| Karen Anderson | Board Member Officer | 10 | $0 | $0 |
| David Stronk | Board Member Officer | 2 | $0 | $0 |
| Pat Gordon | Board Member Officer | 2 | $0 | $0 |
| Bruce Roeding | Board Member Officer | 2 | $0 | $0 |
| Ken Miller | Board Member Officer | 10 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 4074 EGGERS DR, FREMONT, CA 94536-6001
- In care of
- % JOYCE BLUEFORD
- Principal officer (990 for 2025)
- Joyce Blueford, 4074 EGGERS DR, FREMONT, CA 945366001
- Signed the 990
- Hagos Neguse, Chief Financial Officer
- Phone
- (510) 790-6284
California records
California keeps its own records of charities and corporations. Search them by EIN 94-2862140 or by the name MATH-SCIENCE NUCLEUS.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
Mission
Math Science Nucleus is a non-profit 501c3 educational and research organization composed of scientists educators and community members founded in 1982. It serves as an online science resource center to assist school districts teachers and administrators around the world. The major goal is to develop problem solving capacity through science for the worlds children. We provide a free online reference science curriculum for elementary grades. We also manage with field trips and classes the Childrens Natural History Museum fossils of local area Tule Ponds at Tyson Lagoon environmental education Fremont Earthquake Exhibit California Nursery Historical Park and Masonic Home Reforestation Project.
Program accomplishments
- Childrens Natural History Museums renovation of outside and inside were mainly completed. Continued working on exhibit space including new exhibits. Collection archives of fossils and paperwork continued with new collections being accepted. Managed and provided new exhibits at Childrens Natural History Museum including signage and research on materials; collection of fossils at CNHM continued science field trips. Opened in November to public. Grant money mainly from State of California funded renovations. Concept plan for City of Fremont on the original site was completed including new materials found at Univ of Calif Museum of Paleontology. Did research at original site to confirm that there are still fossils in the area. Dig site at Sabercat Historical Park was reopened and limited field trips were conducted.Expenses $1,989,593 · grants $1,250,000 · revenue $1,355,517
- environmental programming Includes tours community service and environmental projects at Tule Ponds at Tyson Lagoon California Nursery Historical Park in Fremont; reforestation program at Masonic Home in Union City; provided free field trips to Alameda County Schools to learn about the local environment; oversaw about 100 high school projects including Eagle Scout project. Display gardens were worked on to refurbish rose bushes California Nursery Office Museum was open again to public on Sat. Trees were planted at Masonic Home under reforestation.Expenses $13,000 · revenue $15,936,027
- virtual classes streaming from North Carolina to California schools; design of products updating Integrating Science Math and Technology Reference Curriculum online includes classes and educational services; updating worksheets earthquake program through Alameda countyExpenses $87,401 · revenue $241,922
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 94-2862140
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- School
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 1983
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Education (B99Z)
- Assets (IRS master file)
- $2,764,720
- Income (IRS master file)
- $1,756,800
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $1,756,800 | $2,089,994 | $2,764,720 | XML |
| 990 | December 2024 | $3,309,434 | $2,076,705 | $3,097,914 | XML |
| 990 | December 2023 | $657,123 | $681,249 | $5,562,636 | IRS |
| 990 | December 2022 | $447,516 | $404,914 | $5,958,000 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 94-2862140).
Questions about MATH-SCIENCE NUCLEUS
- What is the EIN of MATH-SCIENCE NUCLEUS?
- The employer identification number (EIN) of MATH-SCIENCE NUCLEUS is 94-2862140.
- Is MATH-SCIENCE NUCLEUS tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1983.
- Are donations to MATH-SCIENCE NUCLEUS tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does MATH-SCIENCE NUCLEUS file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of MATH-SCIENCE NUCLEUS due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did MATH-SCIENCE NUCLEUS last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of MATH-SCIENCE NUCLEUS?
- The 990 for the year ended December 31, 2025 names Joyce Blueford.
- Who are the officers and directors of MATH-SCIENCE NUCLEUS?
- The 990 for the year ended December 31, 2025 lists 15 people; 8 received compensation from the organization, the highest $83,200 (Hagos Tewolde Negusse, Animator Web Design).
- How much revenue does MATH-SCIENCE NUCLEUS have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $1,756,800, expenses of $2,089,994 and total assets of $2,764,720 at year end.
Other nonprofits in FREMONT
- SAN FRANCISCO BAY UNIVERSITY INC EIN 94-2933165 · last filed 990 for 2024
- OLIVE CHILDREN FOUNDATION EIN 27-1798340 · last filed 990 for 2024
- KESARI FOUNDATION EIN 88-2703350 · last filed 990-PF for 2024
- GOSUMEC FOUNDATION USA EIN 92-1826702 · last filed 990 for 2025
- SOAR FOUNDATION EIN 94-3255490 · last filed 990 for 2024
- AVANTI FELLOWS USA EIN 27-3567586 · last filed 990 for 2025
- AVERROES HIGH SCHOOL EIN 27-4119068 · last filed 990 for 2024
- PALM ACADEMY INC EIN 20-5949060 · last filed 990 for 2025